I had my neighbor rebuild the carbs on my XJ700. The bike worked for a few weeks then started to not start properly and I could tell there was a problem with the carbs. In fairness, my neighbor is a skilled mechanic but this time, he didn't seem to do a good job. I took the bike to a pro and he told me there are a few things wrong and it's to a point now where it may cost me more to repair it than it's worth and I'm worried. Among other things, the pin on which the foat valve/plate rests for 1-2 of the carbs appears to be bent. Is there a way to get these pins? I was told this isn't part of a normal carb rebuild kit? What was happening on the bike is that two of the plates were getting stuck closed and it wouldn't start. When the mechanic tried to fix this, gas ended up just pouring out of the carbs, so something is wrong. He is unsure if he can get the appropriate parts. Any help or advice? There also appears to be an issue with an area where there's some sort of set screw deep inside a threaded hole, and the threads may have become stripped by somebody inserting too large a screwdriver into the body. Can anything be done about that? Are there new carbs available or appropriate parts? Please if you can help, let me know - I'd hate to have to give up my bike that I've had now for 20+ years.