Jerry, is 2mm the recommended idle slide height on the Mikuni?. At 38mm venturi, assuming 6DK3 @ 3rd clip, 3mm slide height and lower puts the needle's straight portion (2.6mm widest part) into the needle jet minimizing the needle jet's influence. Is that the correct part of the needle that should be in the needle jet at idle or should the start of the first taper (2.5mm) be in the needle jet at idle? Would it be correct to say anything under 3mm (minimized needle jet influence) that maintains a decent idle is a suitable slide height setting? Cheers.