So I'm tuning my carbs after rejetting them and I need to balance the carbs what's your guys opinions on making my own manometer or bench syncing? I have made my own manometer before but not quite sure how to bench sync anyone have and advice incase I take that route?
You have to do both.
A good bench sync will make your manometer sync much easier.
You can't get it perfect with just a bench sync, and you risk pulling fluid into the carbs if you don't do a bench sync before using your DIY manometer (been there, done that).
Search the FAQ's and read the wiki for more info.
Thank you for clearing that up!