Much hinges on what "mildly scratched" means, but since they presumably play on your cheaper unit, I can only say that I have had only one unit that would occasionally ship and progressively got worse. It was the Philips SACD 1000 which was originally used with the EMM dac. I have one cd that is so scratched that it will not play on any player I have had. It did read on my computer, however, and my copy works fine on my player. I guess read until you have no errors does work.
I suspect that your unit is misbehaving or more correctly the transport is. It may just need cleaning.
I suspect that your unit is misbehaving or more correctly the transport is. It may just need cleaning.