i'm replacing synchros or carbon blocker rings however you prefer to say it and someone said that all the gears have to be in time is this true and if so are the gears marked and could someone direct me somewhere that shows how to do it ,i build my own engines i was sure i could do this until now soebody please shed some light here THANKS FOR ANY INFO

 

Shoebox has the T56 manual on his website:

http://shbox.com/1/4th_gen_tech2.html#t56