I am currently trying to repair a Heat and Glo SL-75TRS-IPI-D and am stuck on a part. I determined that the issue is the pilot assembly (multimeter) and ordered a new one. In the troubleshooting process I took the ceramic plate off (past trouble with spiders) and found a frayed and deteriorating fiberglass-like gasket between the plate and the assembly (see above). I've done a lot of searching and can't find this referenced anywhere or a replacement part for it. Is this gasket necessary for me to run the fireplace safely? If so, any guidance on where to find it or what to use as a replacement? Thanks.