I got the adjustable flybar from bphobbies.com, though it's available from other places. It's simply the "Dynam Vortex" flybar. If you don't have a caliper, you can just use a ruler to see if the weights are equally spaced from the center. Also, although it would be new, you'll still have to check it to make sure it's straight. I think there is very little that will prevent your heli from stopping during forward flight. It's the nature of the coaxial heli and the behavior of the flybar and upper blades. Moving the servo linkage will make your heli more sensitive to control inputs, but it won't make it fly foward any more effectively.

Soloboss is a pro on flybars... maybe he'll pitch in here, or at the very least, search for his comments on flybar performance in this forum.

The top blades control the stabilization, and it's that built-in tendency to stop and hover that would make me want to cut the TOP blades, and not the bottom, if you want to improve forward flight. Just my gut instinct. No proof of that. Neall