I have the exact same lathe as you but I am putting a CDCO piston type toolpost on mine. I am to the point where I also need to bore the bottom of the block. Before I begin setting up for boring, I'd like to know something.
I put the inner sleeve of the block over the toolpost which is already on the compound. When I place the block next to it, the sleeve appears to be much taller than the block. On your website, you don't mention having to turn down the inner sleeve. Did you have to?
Also, did you lap the dovetails on your lathe. It seems to me the gib face which is against the dovetails on mine is very roughly finished. I can easily feel the ridges with my fingertips (it looks like deeply brushed aluminum). Would it be better to lap this in?
Finally, how did you get the compound knob off to do the ball bearing upgrade? Mine is double nutted on with what feels like 400+ ft/lbs of torque. I'm not sure how to hold the screw without marring the threads.