I have a Variax 600 I bought a while back. Had numerous problems with the coffin shielding thing, but for the money, not a bad little guitar. A while ago, I lost the model knob and had to get one off eBay. It got here and fit fine, but it just continues to spin and doesn't have that stop when you get to the end of the listed model locations. The new knob had the little foot to stop it, so that isn't an issue. I have yet to tear it apart to see what's up. Does anyone have some close ups of that area to see what I'm missing. I am assuming a stop somewhere under the knob, on the board or a mounting bracket is misaligned or missing. Thanx!