What am I missing? Fixing to try a new filter. Carb is clean, metering lever set .010" higher than spec. Saw came in lean siezed due to a bad FW side seal. New top end, new seals, new rubber. Cranks, runs, idles. Go to test in the wood and it pulls well. Piss rev it tunes to a nice 12,5-13 and then after 2-3 seconds leans out and bounces to 15k plus. In this video I leaned the low side a bit to make sure it was not pooling or puddling fuel and just clearing that out. Other than the slow return to idle, makes no difference on the high side. (I know the low is a touch lean in this video.) Tank vent? Fuel pickup? USC the carb even though she is dang clean inside?