I am running the Picco .28 with the standard head. On the Savage, I was using a Hot bodies dual chambered pipe with the hot rod extended stinger. I got away from the old school 5 tanks and did the break in in 3. One of the threads in this forum said "dont baby it and run the thing" which is what I did. After the 2 tank, I treated the third like the old school fifth tank...running in short bursts. By the fourth tank, leaned it a little and never look back. In the buggy, I am running the stock .26 pipe that came with the buggy, nothing spectacular, but I didnt have to touch the needles. I am getting a Jammin JP3, because I want a more top end. I am using O'Donnell 30% with OFNA aluminum clutch shoes with the black springs. Engine has not broke 240 degrees. Make sure to mark bottom dead center and use after run and....GO FASTER!

As far as HPI fiberglass, are you making reference to the pad for the hellfire?