Why not go to a music store and find a case that fits? They make these cases for a wide range of musical instruments, and sometimes with pluck foam so you can fit it yourself.
I take it you gave up on the Craftrite case options (which are more durable than these aluminium cases anyway)
Craftright cases are good but I want a case between the medium and large sizes. I don't mind paying more for that piece of mind, buying a $50 case for a telescope that's so much more doesn't sit right with me.