10 year old VC Resolute Acclaim. In a prior post I asked about repairing fire brick, and it was suggested that I look for other problems. It turned out that my combustion package was shot also. I found one on ebay for 2/3 of what the dealer wanted. Problem is that I haven't found any instructions on how to go about rebuilding. It looks like it will fit in from the front without any disassembly, but what holds in in place (eg furnace cement, etc)? Does it need any gasket? Thanks.