Optimal humidity level for PTE-G???

[curious aardvark]

not bed level - z-axis OFFSET.

IE: how far above the bed you start printing.
Most slicers will let you adjust it.

So if i were you, I'd adjust it down (negative value) in increments of 0.05mm
Until it either sticks or the nozzle gets blocked 'cos it's too close to the bed :-)

From what I've seen recently - particularly angus talking about bed levelling with folded sheets of paper. People are obviously calibrating way too high above the bed.
Use a single thickness of unfolded printer paper.
Why anyone would fold it is beyond me :-)

Also consider buying a sheet of cheap self adhesive pei.
Soooo much better than pva glue.
https://www.ebay.com/itm/12476816529...wAAOSwmypgww3L

For the dehydrator - you'll need one with an adjustable thermostat.
The flying saucer ones will cook the filament and potentially let it change shape or even bond to itself.

Also pet-g doesn't like pva glue. That could be your problem maybe.

[Bruce19]

probly 3/4 single sheet paper