I have the Maddman spring kit, comes with three types of tensions. Also comes with three small springs, like one for the tombstone spring and also one of the smaller springs help work out my Vortex problem on the ratchet.
later,
Billy
http://maddmanproducts.com

Go to your local hardware store, they should have bolt that fits perfectly. That is what I ended up doing, because I lost my screw as well.

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I just called up Tippmann and they're sending me a new screw for my A5 and my 98, for free. I just have to wait for it to arrive in the mail now. They're also sending me a new feed neck for my 98. Gotta love Tippmann.

I picked up Maddman spring kit...

I checked Tippmannparts.com and they sell the Trinity spring kit for 11 bucks, does this upgrade make a noticable difference or is it just a waste of $11?

Spring kits are a good value if you have trouble getting high velocities. It's one of the cheapest and most effective upgrades you can make to your A-5.

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The main thing a spring kit will help if you need to raise or lower the velocity of the marker. If you have your FVA out and you cannot get the velocity up, you can install a stiffer spring. If you have the FVA in all the way and you need to lower the velocity, you can install a lighter spring. It is mainly an adjustment tool. You can find cheaper ones on ebay sometimes.

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"A positive attitude may not solve all your problems, but it will annoy enough people to make it worth the effort." - Herm Albright

what kind of velocity are you trying to reach? I have a flatline and from what I have read I want to be at around 273 ish. I just found this out today so I gotta re-chrono this Sunday. The last time I check I was around 235.