Hey whats up guys im gona be rebuilding my sm yz426. Got new piston and timming chain also will adjust valves while there. Now i found a good deAl on wr426 trans gears, the whole gear box. How hard is it to get to the trans gears? I can do rebuilds and all that but not to sure on the trans i know it will be stator side. Is it as easy as pulling motor, jug and stator side and getting to the trans gears and swaping for wr gears? Also i have all other gaskets but when splitting the case do u need the crank case gasket? Is it a sealant or paper gasket? I also bought a flywheel puller. Thanks for any help guys.