From day 1, these trannys have been a tad clunky on the Neutral - 1st gear shift. If yours is clunking on the 1-2 also, then check your clutch cable slack. YOu should be able to move it back and forth no more than the width of a nickel. If yours moves more then tighten it up. If it's within spec you should ask your dealer to take a quick look if it's under warranty. If it's out of warranty, maybe someone local on this board can help. Weird sounds are really hard to diagnose in writing. I'm local in the 818 area code if you're near me.