what are plug chops?
..plug chops are performed when tuning a carburetor..
..their purpose is to give you an indication of what your fuel / air ratio is, at any given throttle position..
..the reason the are so important to perform is, you could be running a "lean" mix..which could do some SERIOUS damage to your engine...
..NEVER RUN LEAN!!
..btw, Tutto..I read one of your posts where you said you had white smoke from your exhaust....
..what I found to be true, is that if you have a "rich" mixture, the smoke will be black...
peace