Conrad and Len,

Your comments provide some reassurance.

My end goal is to produce murals from 8x10 originals, in the 10x neighborhood.
I'm not ready yet to process full size prints, but have done some "stress tests" of the system with 1m long test strips at full magnification, in order to get a sense of how it performs.

Have not detected any alarming overheating yet…

Would feel much better though if I could get the EST 2000 serviced at some point, but haven't found any leads yet for anyone capable of performing such a service…

Fingers crossed…