shocks
I found the shocks are easier to get a consistant rebound if you use the foam inserts that go under the shock bladder (Part # 30 8090). I've built alot of xrays and serpents shocks and I consider the foam inserts a must have. They cost $5.75, they cost serpent about 2 cents to make.
They look real close to the round foam that comes out of the fko5 foam bumper when you install it. Cut that into 4 evens pieces and I bet it will work.