Re: carb advice
You do not necessarily need to do anything BUT: Anytime you remove the carbs they will go back on the manifold in a very slightly different position--not a lot, but just enough to make it a good idea to re-synchronize them. Before you go rebuilding them, see if it is really necessary. Very often a good careful cleaning will restor the to brand new condition.
Synchronizing instructions are at the FAQs sticky at the top of the page