My Orion Sirius mount made a horrible grinding noise on Saturday. Any suggestions for repair (other than doing it myself, since I don't trust myself to do the repair)?

I called Orion on Monday, got put on hold for about fifteen or twenty minutes before being told (by the automatic answering machine) to leave my contact information. No one has called back or replied by e-mail, yet.

I also fired off an e-mail to OPT Corp, with similar results. I'll try calling both of them again, tomorrow. But, in the meantime, any other suggestions?