The pilot jet works in conjunction with the FUEL/AIR screw you identified as the air screw. That screw adjusts the amount of fuel mixed with the available amount of air for a smooth idle. If it idles fine, no adjustment is necessary.
The slide needle is the mid-range metering device. If it runs at steady throttle without loading up (like the choke is on) or surging (acts like it wants to go faster but can't), then it's fine and does not need adjustment.
Down the block wide open is not far enough to read a plug. The engine should rev to red line (hits the rev limiter) without bogging or surging. If you got a handfull of main jets, jet up in steps of two sizes till it bogs (runs like the choke is on) just before it hits the rev limiter, then back down 2 jet sizes from there.
No guarantee that you won't be getting pulled out, but it shouldn't be due to a running problem. You can still get flats, have a bearing go bad or break a cable.
The slide needle is the mid-range metering device. If it runs at steady throttle without loading up (like the choke is on) or surging (acts like it wants to go faster but can't), then it's fine and does not need adjustment.
Down the block wide open is not far enough to read a plug. The engine should rev to red line (hits the rev limiter) without bogging or surging. If you got a handfull of main jets, jet up in steps of two sizes till it bogs (runs like the choke is on) just before it hits the rev limiter, then back down 2 jet sizes from there.
No guarantee that you won't be getting pulled out, but it shouldn't be due to a running problem. You can still get flats, have a bearing go bad or break a cable.
