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What kind of compression numbers did you get during the compression test?
I see you did the carbs, how did you synchronize them? What tool did you use?
What kind of vacuum gauge are you using? What is the vacuum difference between each cylinder according to our gauge?
There is a compression spec for a new engine, that is 212 psi +/- 14 psi.
Your readings in the 120's are on the low side. Are you using a quality gauge such as snap on, MAC, Matco, or OTC? Or are you using a harbor freight cheapie?
The flywheel has nothing to do with checking compression or doing the carbs, did you change the timing belt?
No problem. Good luck at the dealer.