UNCO- Grill Gasket, 1/2"x1/8", 15 ft, Smoker Gasket Sealer | High Temp, Easy to Cut, Strong Adhesion, Suitable for Most BBQ Grills and Smokers

Might take slightly longer to heat just due to the internal volume being higher, but if you print some TPU gaskets it should be fine.It will still hit the sides regardless of the riser.I got a roll of this to put on the top right corner of the chamber to stop the noise of the tube hitting the side. It's gasket material with adhesive on one side, and it's meant for grills so printer chamber heat should be no issue.