Intermittent blip at wot

Running a 162.5 main and stock pilot in rhino 660 only mod is a RAIS tube stock filter with jbs sheave 16 g weights orange spring with 27 inch tires at 4500 or so elevation. I've been meaning to downsize the main to a 150 to 155 I notice the bike runs great overall but ive noticed an intermittent blip once in awhile at wide open throttle near the top of the power band once it does it it goes away and runs smooth maxed out. My bottom end also seems allitle boggy if I punch it from a stop then it pulls smooth once it gets moving. Think its pulling to much fuel and can't burn it fast enough? Any thoughts ?

sounds like you could be running rich would be my guess, especially at 4500 elevation, usually rich will run pretty good on bottom end but blubber on top

have you access to af gage to help dial it in , if not check the plug see how rich it looks to be running

with my mods i'm running 157.5 main with 45 pilot at around 1600-2000 elav. wot i'm 12.6-9 on the air / fuel guage I do need to rais my needle cause im alittl e lean in the mid