anyone know the b5 needle settings in their race tune not the flush (i would like to know for reference)... i dont seem to be getting the tune and engine shuts off sometimes .. temped it to see but it was 210f.. while running there is plenty of smoke ... it idles well and low and after sometime the idle shoots up like anything .. also it stutters sometimes after leaving throttle .. people said its too lean on bottom but my idle gap is about .60 mm ... im using a throttle return spring.. after doing the pinch test it took about 8 seconds for the engine to stop .. i have sealed everything and fuel tank and lines checked too ... running 20% . i dont know wat do to pinch test saying rich LSN and running behaviour is like lean LSN .. please help me out ? can it be the front bearing ? just installed a new rear bearing 4 days back .. and its been happening for th elast 4 days .. new carb orings too .. please anyone know how to solve this ..