hi all
recently got meself a new a5 and decided to mod it up a bit after looking thru the majority of threads on here

all mods went on ok ,with no problems
fitted the techt cyclone mods including the green squishy paddles
and then went on to upgrade the reciever with the red power tube 75155
after installing it i attached my co2 and out came c02 gushing out the barrel until i cocked it which stopped the leak ??
it seemed to work ok when it was firing
had a look on here for referance to see if it was a problem or if i had purchaced the wrong tube ,,doesnt seem so
so stripped the receiver down to check n re oil the o-rings and valve assy all seemed ok until i attached the air again
upon inspection with the handle removed i noticed that the rear spring was pushing the bolt onto the valve thus releasing the air before being cocked
so my question is ??? is there another mod that needs to be done ie:spring or have i done something wrong ???
any help appreciated thanx

Not really an issue. I have seen this with stock P-tubes too.

Just cock it before you air it up .

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thanx ,
thought i'd done something wrong missed something blown a ring etc etc

No, that's normal. What happens is the rear bolt (hammer) is leaning on the valve with the gun uncocked. This unseats the valve and allows the air to leak past. Once you cock it, the rear bolt is pulled back and held by the sear and the valve can completely close.

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If vegetables are bad and some people are bad, then are some people vegetables?

Yep, its really common. The manual even says to cock it before you air it up and that's the reason why.

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yeah thanx guys
guess i done the newbie thing and shot before i read the destructions properly
went to our local pb field (woodsball) to try out all the mods in a 1 to 1 with a mate who plays tourno
first air'd up 3000psi air ,took it to the chrono 342
fired a few thru ,then came the ball breaks ,
screwed the vs most ov the way in and got down to 292
then screwed it all the way in ,and the fps wouldnt go below 285
is this because the vsa on the powertube is of a narrower diameter than stock ??
all afternoon i suffered barrel breaks at higher rates of fire and constantly swabbing the barrel ,no chops just breaks
which got really annoying after trying different grades/makes of pb's
any advice ???

Did you take out the bolt and powertube and clean them after a break? Sometimes paint can stick to those and cause problems, too.

Are you using CO2 still or did you try out HPA?

Is the speed that high only with the Red Hot PT or with the stock PT as well?

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Grimick, what kind of temps were you playing in and what barrel were you using? Most barrel breaks have something to do with a paint to barrel match. Or the temp can have a big effect on how the paint reacts to the gun. Very cold temps are very hard on paint.

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If vegetables are bad and some people are bad, then are some people vegetables?

yes i used hpa down at the pb centre as they dont use co2
but i have to use c02 at home as hpa isnt available
but i always strip n clean + oil before i change over to inspect for any damage to o-rings
after a few breaks i field stripped the marker to inspect for paint and residue
but only found this round around the front bolt area,so cleaned it up ,washed out the apex and the exhaust ports on the barrel,and tried again
fired ok for 10-20 rounds then splattt
the temp on the day was around 4 deg but sunny with a covering of snow
i thought that the paint might be an issue but my mates ego was firing the same paint at 292 on hpa with no breaks ???(until they hit me whilst swabbing)
i really cant get any figures for the velocity on c02 as i dont have a chrono .
my set up is basic a5 with responce trigger ,all the techt mods+ qeph ,polished internals ,and a jts red hot powertube+bolt and a bt8" with apex barrel