Wasn't implying you, Six - just a lot of talk about 'from reading' and 'friends', and from us too, etc. The issue is one of not following a single problem to it's conclusion and then getting lost in the confusion of multiple issues.
FIRST - make sure the carbs are SPOTLESS and re-assembled correctly!
2nd - verify that the cam timing is correct, ignition timing matches and tensioner is correctly adjusted
3rd check and/or adjust the valves
4th - check for spark
5th check for fuel delivery to carbs
THEN mess with the carbs:
1) make it start, even if it won't run well.- use starting fluid if you must
2) make it run at high throttle, under load (main jets)
3) make it run at mid-throttle, under load (needle jets and needles)
4) make it idle and decel from full throttle (pilot jets and fuel screws)
I'm sure I've missed something, but this is the basis of troubleshooting problems to conclusion... sometimes the symptoms will tell you if you can skip some of these steps; sometimes they won't.
Keep asking questions and we'll try to help, but we've got to treat these one problem and one fix at a time or the clues simply get lost.