Hi Paul..thinking about it maybe just knock off some metal with the angle grinder to level it up
I wish I still had my first wide field of the Milky Way shot with the trusty 300d canon on auto focus...the stars were a sixteenth of an inch in diameter but I just thought it can't get better than this ...priot to it was chopped up digital cameras or web cams....and when someone helped out with the suggestion to use the manual focus option I just could not believe my results...and then I got a t ring...I had arrived but find myself still running after the bus.
The RASA is for me a challenge so I am very lucky to be presented with a challenge at my stage in life..things just keep getting better.
Alex