Update:
Even after both heater bulbs and IR sensor swap, The Fuse 1 is now failing to print. Over baking the loose powder in the chamber and I don’t believe the temperature stated on the display is what in fact is going on internal even after the heat sensor swap. It is now like the entire Chamber of powder is turning into “surface armor” and cracking everywhere. This is why all the warping I assume was happening as well.
Pretty confident that this was an conflict between the Custom GF Beta of Preform Formlabs had me running to successfully get the printer going and their December Fuse 1 Firmware update that essentially “cooked” the machine. You can see how hot the heater bulbs actually got and now, all the loose powder in the chamber gets “fused”. Even after replacing them, the IR heat sensor, defaulting the machine and running both the updated versions of PreForm and the Fuse 1.
You can see my latest thread but as of now the Fuse 1 is down with a replacement recommended but no turn-around time for delivery…
Support is responsive…but not sure how well or often they actually get to talk to the engineers so been left troubleshooting a lot of this on our own.