at the risk of sounding condescending:
have you tried contacting markus?
i seriously doubt this is the first time the issue has arisen, and he may be able to sort it with a simple email exchange.
...jeff
From: Tom Doncourt
To: newmellotrongroup@yahoogroups.com
Sent: Wednesday, July 20, 2011 9:02 AM
Subject: Re: [newmellotrongroup] Re: MVI tape frames?
Bruce- that could very possibly be at least part of the problem--I have difficulty lining up the frame and screwing it in completely, I'll look at that-Thanks! Glad to hear that others have had no problems-would hate to have to scrap the frame! TD