i'm having a bit of trouble getting the motor dialed in. the motor was just rebuilt fully, had the valves and seats re-cut, has a brand new carburetor and all that good stuff.
engine starts up without any trouble. but once it's running, it dies when i try to bring the idle down below 900 or so. poking around the engine i noticed that cyl 1 and 3 are running quite lean. but on the flip side cyl 2 and 4 are running quite rich. at this point i'm pretty stumped.
anyone have any experience with this or insight as to what may be going on?