Do you have a problem regarding getting full throttle movement on the carb. arm then you can do like i had to do on my yamaha C75.
I adjusted all carb (i have 3) the end stop at eatch carb was not correct, so i had to bend the metal arm on eatch carb. to make it stop at full trottle opening, i did that on eatch carb. seperatly.
I then syncronised the carb. to open correct and simultaniusly both at closed and full power.
What i then realised was that the lever did not reach far enough to give full opening, and as you can see i had to shim with tape to measure the distanse needed. (see pics)
I then built that up with epoxy adesive that i later grinded down to correct dim.
When the idle are adjusted at the carb arm the lever are supposed to bearly come in contact with the roller. (se pics for idle)
I use the Clymer b784 repair handbook it is "ok" is the offisial shop manual coveres the most but i´m not impressed, take a look around before you by one for yourself