Ive yet to log rpm drops on the shifts with my conv on the new build. FWIW, its a 3200ish PTC non l/u and it spools my 6262 like greased lightning off idle from a stop and thats with a 28" tire, i can spool to 5 psi or more with footbrake easily. Just need to log rpm drops to make sure it isnt laying over on the big end.