Looking like a very good restoration. Im going through the same process at the moment. However I have bitten the bullet and ordered new sprockets, but waiting for them to arrive. I have been forced to use the old rotary for the last month and what a difference compared to the reel mower.
In regards to the sprockets and chain's. I have found most 2nd hand units to be in worn out condition. Because in all honestly I dont know anyone who pays particular attention to the maintaince of these items. (excluding members on this forum)
Mine is a later model SB, which is painted in Bright green and I can sypathise with you on how hard that paint is to remove and paint over. However I have not started my catcher yet. Dit you use a flap disc on the angle grinder?
