I replaced the gaskets today for the ash and front doors. The left side of the ash door was mis-aligned (too low) so I added a washer to lift the ash door. The gasket aligns great with the compression rib fine now, but the top of the ash door scrapes the bottom of the ash lip when closing it. The ash lip is thin, maybe about 1/16" thick and looks to be made of caste iron. Can I safely bend it a bit (1/8" at most) to clear the raised ash door? Was thinking of bending it up using a hydraulic jack. Would only try it with a cold stove in case I tip the stove over. OR is the ash lip more likely to crack because caste iron is too brittle?