One inch or .965" eyepieces are bad news, as you have already discovered. What little yo can find new is the lowest possible quality. If you could find some old orthoscopic eyepieces in .965" go for it, otherwise forget it. Adapters can be equally hard to find and, be warned, there is no guarantee that will solve the problem, since a lot of reflectors don't have enough focus travel to come to focus with an adapter installed. Tough to predict on these old telescopes
, so you'll probably have to bit the bullet and do some trial and error. Meade
used to make an AD-1 adapter, but I haven't seen any availability on this in quite sometime. However, I have seen some recent ads by Orion that list what appears to be the identical adapter because it even uses the same part number, 07159. Give them a call.
Last resort is to switch out focusers, but that opens up a can of worms and there is also very little available in focusers for reflectors. Not usually cost effective on a telescope
like this. I would definitely try the Orion adapter, first.