I've always "heard" that these carbs had bowl issues, but have always READ that they did not. Rarely, (RARELY) did the plastic bowl if ever, warp. (maybe engine meltdown or major fire?) it just didn't happen. people placed blame where it didn't lay, mostly due to their lack of tuning skills. People just didn't take the time or effort to adjust them in the correct procedure. If you try to fix "point c" before adjusting "point f" you are going to have problems and will never get it sorted out. it must be done in order. A,B,C etc. Demonsizzler is the man to go to, from everything I hear and see.