There are a few cb750 rebuild specialists. I did mine myself, but noticed that the guy that wrote one of the best manuals does rebuilding.
You can find his info if you look at the resources on the dohc carb cleaning thread. Macgregor carb cleaning I think.
I haven't used him or cycle x so I can't vouch for either. Just letting you know some options.
Sent from my BlackBerry device on the Rogers Wireless Network
Date: Tue, 5 Jun 2012 13:07:04 -0700 (PDT)
Subject: Re: Carb rebuild sucks
Has anyone ever used the cycle x carb rebuild service?? I just don't have the time to mess with these carbs & I figure once I add the parts & certain agrivation the cost difference would probably be minimal. If anyone is near the Jersey shore & can rebuild 1979 dohc carbs, let me know.
Money is very tight & I may need this bike to commute to work very soon.
1981 CB750K with 900 cams
90K KM's, rebuilt head, rebuilt carbs, upgraded valve stem seals
My wife's recipe website that I'm trying to help promote:
Strawberries for supper. Yes, I am a lucky man.