Does anyone need this? Won't fit a Celestron/Meade SCT thread, so has to be one of the Dynamax, Criterion, 4000, etc (?!?) models. The pick-off prism has a chip on one edge (but should work o.k.) and its alignment needs adjustment (which I can't figure out how to do, but should be do-able). Yours for the cost of shipping ($4 to CONUS or Canada). Thanks for looking!