to the best of my knowledge, ALL the film sent to them, c-41 and e-6, is processed on dip-n-dunk refrema processors. they might be running the $5 films through a RT machine, who knows. When I talked with them last(october I think), I remember asking them if they did what I just mentioned, and they said that they used RT ONLY for their 1hr turnaroud film processing(which I don't think they do anymore anyhow, for any service)
send them a message, maybe you'll hear back
(there was a url link here which no longer exists)
otherwise, send a roll to another lab, and see if the scratches still appear in the same places...
-Dan