The grub screw was the first job I ever did on a Brick. Took about 8 hours start to finish and didn't require any special tools. Just take your time.
The transmission splits fairly easily and is just a little fiddly to get the cases back together, but not real bad. As I recall, the worst part of the job was getting the grub screw back in after I cleaned it and applied blue Loctite to the threads. I dropped it into the transmission a couple times and had to fish it out.
While you are in there, it is a great time to lube the clutch splines and replace the clutch o-ring and maybe the rear engine main seal. Be very careful with the clutch boot or you will have to replace that too.$$$
Take your time and bag and label the stuff you pull off as you go. This will save a lot of time when you put it all back together. You will need a stack of blocks to put under the engine when you remove the transmission. As you reassemble, put a little anti-seize and and torque all the fasteners. Install new brake pads, lube the drive shaft and change the transmission and final drive fluids and the entire rear of the bike will be in top shape when you are done.
