This is one problem I've found to have with my cyclone. Some claim that this has fixed thier problems while others say there isn't a difference. It is however worth a try if your cyclone isn't working. It's easy to do. I just don't want you thinking this is going to fix all your problems.
Tools Needed:
>Flathead Screwdriver
Instructions:
1. Figuring out what's wrong
This is what your standard screw that connects your cyclones macro-line to your marker. There is a hole drilled throught center that is there to allow the extra gas from firing your A-5 to make it up to the macro-line and then itno the cyclone. The outside of the exit whole is caved in a bit to let the air move around it and into the macro-line regardless of the exit holes position. This however doesn't always seemed to be carved out correctly causing air-flow problems. The fix is very simple.
2.Fixing it.

As you can see with this picture, the exit hole is perpendicular to that the grove cut out for your screwdriver to go. Now, all you have to do is line up the hole with your macroline. When finished it should look like so:

and
Like I said, it may or may not fix your problem. However, it is worth a try. Good luck!
-Marmaduke
p.s. Sorry for the huge pictures... I'm to lazy to resize them.