While we were shooting in Honduras we noticed digital dropout in the playback and audio problems with one of the tapes. At the time we thought it was just our playback camera (the problem extended to other tapes) so we got it fixed when we got back. But now on a different playback camera the same tape is having the same problem. No other tapes are. This is a highly significant tape. The most important one of all our footage. Please someone tell me that if it is dirt on the tape it can still be fixed. I know the footage is all there. We were able to watch it once on our DVX (but I don't want to do that again, especially if the tape's dirty). Can a repair place salvage a dirty tape?