IF heated chamber = cold THEN bed = cold AND part = warped
IF heated chamber = warm THEN bed = warm AND hotend = jammed

That was my point. Never said anything about making the heated chamber warm and the bed cold. What temperature did you set the build environment to?

You say "a significant number", but I cannot find any examples on Google. Do you have any examples?

"Suggest you drop $20k and try it" is hardly helpful.