I've been messing around with my Rochester Monojet MV on my 250 in my 69 Buick and I don't know what is wrong but I cannot for the life of me get my mixture right. Now I usually just set the idle to where it peaks the idle RPM and I recently rebuilt the carb. Before the rebuild, it took about 2 and a half turns out for it to idle and run well but now... I can screw it all the way in, and then only a quarter of a turn out, it runs the best. I'm not sure why and I don't know what's up but that doesn't seem right.

69 Buick Special Deluxe. Intercooled Turbo Chevy 250 @ 15psi on a stock long block. It's kinda fast.