Been running my 036/360s for years. Super easy to tune; easy to hear it 4 stroke when rich, not hard to get the L screw just perfect. Recently rebuilt a 361, tuning is giving me a headache. Hard to hear it 4 stroke, if I fatten it up enough to hear it well, but still clean up under heavy load, I’m at about 12k rpm. If I set it at 13.5k, it hardly 4 strokes at all, sounds too lean. L jet is super touchy. Small turn goes from lean chugging to pooling up. Any expert 361 tuners have any advice?