i thinking either not enough air(dirty air filter) which is making it run rich or its starving for fuel on the top end... :) i've had both happen to me and it sounds the same :wink:

i have a 1050 carb. on it. 92 jet square. plugs stay black. sometimes i run wit no hood on so i think its gettin enough air

if the plugs are staying black..... def sounds like ur running rich then :wink:

either too much fuel or not enough air.......try running it with out the air cleaner for a pass or two and see what it does :wink:

i dont have an air cleaner on it at all. i have jetted it down to 90's but no change

Sorry just getting back, cable has been down. it could be rich at idle and the main circuit still lean. what size idle air bleeds, also high speed bleeds, is it a 3 or 2 curcuit carb?

i dont know the answer to the carb question, but i have took the 1050carb off an put a 950 carb on it and it response alot better an sounds crisper. but the 60ft an et stay the same with both carbs

What ignition box are you running? I had this happen with a brand new, out of the box 7al3 from MSD.

i have an 6al

i would figure that your 60' would be.... but did you notice a diff. on the big end :?

So this has been a combo that has been together and worked fine with no previous problems? If so, what have you changed besides the gear?