Carb Parts

[OC Hoosier]

So I've been attempting Jaime's 'power increase' techniques and things have gone well so far. The needle shim provided a little more mid-range grunt, and I have a new main jet and k&n ready to be installed. My problem is that the float chamber screws are installed so tightly, and the metal is so soft, that the heads just want to round off when I try to unscrew them. Has anyone else had any issues like this on their Mikuni? I don't have an issue with drilling them out, so long as I can find replacements. Does anyone know of a dealer that carries replacement bolts, even if it involves buying a whole rebuild kit? The company from which I purchased my jet doesn't appear to carry them.