Where should I take my bike for carb maintenance?
Here's the details:
1986 Yamaha FZ750, four Mikuni carbs.
Took it to Daytona Motorsports on Hastings, was talking to Ross, the (now former) shop manager there because it's been running badly when warmed up.
I was told that it's due to the jets in the carbs being too big, making the bike run rich. After doing some research on my own, I came to the conclusion that it was indeed running rich (smell of fuel in the exhaust, blubby under acceleration, poor gas mileage).
Was in at Daytona the other day, and found out that Ross is no longer working there. Talked to Fenton (who I understand is the owner), explained the symptoms I'm having to him, and he tells me that the chance of it being jets is almost nil, and that it most likely needs new needles and o-rings. O-rings are apparently leaking, which is causing excess fuel in the carb, causing the bike to run very rich (and badly).
He pulled up the Yamaha diagram for my carbs, and it turns out that the needle/o-ring/etc kit is just shy of $50 per carb, and that he estimates about $400-500 for parts and labour. Four carbs, ugh.
So, I'd like to solicit the experience of you BCSBers and ask:
1) Given the limited information, is leaking o-rings likely to be the culprit here?
2) Is $500 a reasonable estimate (assuming I can't get the kits cheaper somewhere else) for a four-carb tuneup?
3) Should I trust Daytona to do it, or do you guys and gals know of someone who is preferred for carb work?
and 4) Would it be more effective to replace the carbs with newer (but compatible) units - maybe off of a newer FZR or YZF?
Sorry that this is a long read, but it's something I've been trying to get sorted out since I bought my bike a month ago, and I don't want to overspend if I can help it.