1988 klr 250 carb issues
Found out the problem. I acquired another carb from a parts bike for comparison, and found that a previous owner for my bike had drilled the pilot screw hole out, maybe an additional .010: -.015". With the screw all the way in, it would protrude nearly 1/16" into the throat. That explains why it would only idle with the screw bottomed out and the throttle plate opened excessively.