My arcam alpha 7 can't read help

I have an arcam alpha 7 that I'm using as a transport with an ART/DIO. The problem is that the Alpha 7 cannot read alot of songs. An example: I was playing a Joe Strummer CD tonight - it would start reading a track and skip from, say, 0:00 to 1:17 and then jump to track 2 at 0:37, etc etc. Sometimes if I fiddle with the drawer it will pick up a problem track, and it seems to have problem tracks on most of my cd's. However, the cd's play fine in my boom box and my disc man.

I took it back to the dealer who sent it out to be repaired. They replaced a DAC module, and didn't fix the problem. Since then, I've moved away, and the warranty is over, for what it's worth.

Question: what does it sound like is going on? any tips about troubleshooting this? anything I can do on my own, or have a local electronics place try to do without costing an arm and a leg? I think I got a lemon with this model, I've had this problem with it since I bought it 2 years ago. I haven't heard other arcam owners complain, and I like the sound of it on its own and with the ART DIO.

Thank you!

Robert