Rather than buying rebuild kit, idle screw and fighting to get that broken air/fuel screw out, what is your opinion on the Aftermarket carburetors on ebay? They run $50-$60

 

The oem Mikuni is the better built carb. If you can save it I'd do that. Aftermarket Chinese knock off carbs would be the last resort.Some have reported that passages weren't milled all the way through on some and others had trash in them. If I had one,I'd tear it completely down and clean out everything.You get what you pay for.