I just picked up a preowned one of these a few hours ago. Let me first say, that I have too much equipment so I didn't need it, but its my hobby and U only live once.
I have brought a mark one; it was for a reasonable price.
Mucking around (Oh what fun!! (No sarcasm intended)), I believe that I have managed to get all eyepieces to focus, but not all in the one configuration. The best fit for me was extending the length of the focuser by using a cheap barlow (with the lens removed). Oh, this was with a 1.25 inch diagonal. I only have 2 x2 inch eyepieces and do no intended to those as I think it will upset the balance of the setup on my altz mounts.
I thought the scope was already slightly, tail heavy (EP end), but my altz mount could handle that by tightening the clutches.
I am fortunate too have so much equipment and thus options. This may have been difficult for others who are just starting out.