Check out the TSC Stands thread in the TSC forums... You can take extras and remove the names on them, and make generic stands if you have extras lying about. I have an assload of ROTS stands I know from Utapau Clone army building alone. It's a thought.
Why's the Marine so hard to stand, Nick? Legs pinched together? I notice that on some figures... Usually clones. In particular, lately, is the AOTC Clone Sergeant. I got 3 last weekend and all 3 have legs that sort of bow inwards. I'm going to boil them so I can bow them outward slightly.
If it isn't legs that are too far apart, they're too narrow or bowed inward.

No happy medium.