I was thinkin that might be the problem, I am still new to tuning the carb and I have been reading as much as I can on it but it can still be tricky. It's hard for me to set the high speed needle, I'm not sure what to listen for or look for. When I have my truck floored and it bogs like it wants to die I richenit up but thats like the only thing I know about setting the H.S.N. other than that I am just guessing and hoping it sounds good.