Bryan, please post what you find out about replacement lamps. Mine are close to going.
FYI, if any of you are using P99 as a replacement platen, know that the sharpness of the scans degrades over time. I'm using Aztek drum cleaner, and I suspect the fluid degrades the non-glare surface with repeated cleaning cycles. I can't be more specific, but I'd guess maybe over 30 cleaning cycles. So the good news is I'm pretty good at focusing my Toho 4x5. The bad news is that I have some rescanning to do.
Best,
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