i just got my FMS 65MM TB on and it whistles a little bit. does anyone elses? if it can't be fixed, it's ok, but i thought i might could adjust something to fix it. also, the idle hangs around 1200-1500 RPM for a minute before it settles back to 650. can i adjust it? what does adjusting the throttle stop screw do? that is, the one that contacts the throttle linkage and i assume the hex bolt on the other side of the TB is for idle adjustment? sorry so long, thanks.