i have never taken a shift fork out, how hard is it to do yourself or should i get it done?
Chagning out the shift fork is prolly the easiest of any internal repair. But the syncro you have to really disassemble her.
Here are some pics of a W56B with the case off. The large fork near the center is the 1 and 2 fork/hub. It is upsidedown in the pic but it really shows it. The metal ring that bends around is the hub, is the shift fork. The two brass rings are the syncros.
<img src=http://oppiz.net/pics/yota/trans/DSCN2433.JPG >
<img src=http://oppiz.net/pics/yota/trans/DSCN2438.JPG >
Here is a pick of the W56B all disassembled
<img src=http://oppiz.net/pics/yota/Yota%20Pics/Trans%20Gears.jpg >
Here are some of the special tools needed that i had to make. You will still need snapring pliers, press, and an assortments of other tool to get her done.
<img src=http://oppiz.net/pics/yota/trans/DSCN2434.JPG >
I enjoy rebuilding things like this more so then sheet metal work. Marlin prolly could rebuild it for you also :-p Enjoy