Simple carb swap question

[waterman]

Hello everyone. First post, longtime reader.
I have two 81 650g models; one that I tried to restore (long story-oil leak from head), one running bike purchased last fall to ride. My running bike is currently dripping gas out of #4 carb and thus will need cleaned, float adjusted, etc.
My question is if I switch carb banks from old parts 650 to new running 650 will I have to adjust air screws (pilot) to new running 650 requirements. The old carbs still have the factory plugs over the pilot screws. What I want to know is are the carbs adjusted to each individual motor at the factory or to a set standard?
The parts bikes carbs were cleaned and went over last year and the motor ran well (still leaking oil from head though) so I could save myself some ride time with a simple swap.
I have had difficulties in adjusting pilot jet screw position by ear and would like to bypass that step if possible. Thankyou in advance. Keep up the good work.

[Guest]

I have had swapped many carb sets out before, and i have never had any problems. You should be fine swapping them out.

[Guest]

Sync

You will have to synchronize the carbs and adjust the pilot screws. Each bike is different so the carbs will not be tuned to that particular motor.

[waterman]

That is what I had figured. It probably would run without adjusting the pilot screws but for best performance, I will need to tune them. I was sure I would have to synch them. Thanks again.
Later when I have time to write I will describe my many troubles with the oil leaking 650...

[rphillips]

Carbs should work fine on either engine, as long as they have the same intake & exaust systems. If one engine has a 4 into 1 exaust, & pod filters, & the other has stock exaust & original air box & filter, the carbs will run, but won't run right.

[waterman]

That is not a problem, both 650s are bone stock. I just wanted to know since the nonrunning bikes carbs still have the plugs covering the pilot screws and I will have to drill them out. Not a big deal, just extra work.
It is kind of interesting in that the valve cover bolt pattern is different between the two bikes. After checking the vin sticker, I discovered they were built in consecutive months. Must have been the end of the earlier 81 design and beginning of the newer designed valve covers. Again, I don't think it should affect the carbs.
Tonight I went over the old carbs and checked float height, slides, and jets to make sure they were okay. Hopefully, tomorrow I can pull the new and replace the old. I will then rebuild the new with o rings and do it again--yeah...