Well, for all those who are unhappy with their Yupiteru MVT-7100, please remember that they came out in the late 1990s, so even the youngest ones are over 15 years old. Just because you bought it 5 years ago does not mean that the thing is 5 years old!
If you're still not happy with it, and it's still lying in a drawer unused, then maybe I can help you convert it into some cash. I'd be happy to discuss buying your old '7100 (or '7200, but not '7000). I'm always on the lookout for these, I can use them for parts to repair and refurbish others.
PM me, if you wish ...