I used a OS160FX / OS'F' Plug / Perry VP30 pump / Hatori Header / Aeroslave Carbon Pipe all last year in Pattern.

Ran standard tank over the CG with basic clunk and dubro medium fuel tubing right through. All I did was richen the pump half a turn and it never missed a beat all year.

Had a small issue with the needle turning in flight, but stretched a small piece of dubro fuel tubing over the needle and 'ratchet' finger to hold the finger against the needle and it was fixed.

I am thinking that it may be a simple fix like flexible clunk tube and/or heavier clunk, but I doubt whether it will take much . . It's a GREAT combo . .