I responded to this post yesterday, but was disconnected mid transmission. Sorry
I doubt that there was contact as the bottom of the baskets are just short of a complete fit. The negative lies off the bottom just a bit. I also had the emulsion side up and there is ample room above.
I believe the problem may indeed result from the washing baskets, mainly because it is the only thing I have changed recently. I washed them in the Mate's dish washer last night and I may try it again with some "bad" or blank negatives. I have lots of these around.... Kmart sells a stainless steel version. I may check out a couple of these.
Thanks for the reply, truly, dr bob.