I have removed my ETX90 ota from the fork mount and plan to use it on a UA McroStar. The mount handles the scope very well but mounting it with the 1/4 - 20 holes in the base of the ota, puts the eyepiece at the side of the scope. I'd like to use rings to mount the scope so as to get the eyepiece back to its normal orientation but can't find any rings that the vendors think will fit.

I priced a set from a site where the owner will custom make the rings but frankly, I don't want to pay his prices.

Does anyone know a source (or do you have a clever DIY approach) of rings to mount the tube??

Please don't suggest using a visual back. I've considered, and rejected, that option.