How hard is it to replace the seal at the shifter? Is it like the countershaft sprocket, pull the clip ring and replace? Or do I need to pull the shaft out through the clutch side to get to the seal? Is it just a matter of pulling off the clutch cover, removing the clutch, pull the shaft, change the gasket, replace shaft, replace clutch, new clutch side gasket, put on cover and go? Thanks Blue dudes!