I have come into possession of an old Stainless Steel Performer that needs some TLC. The burner has rusted through with pieces coming off, and it no longer has the original propane tank. There's also rust on the on/off valve in the regulator. I'd love to have the propane ignition assist. Can I simply replace the old parts with the burner and regulator for the current performer model and just use the 1lb propane canisters? Even better would be to upgrade this to work with a 20 lb. propane tank. If this can be done, which parts would I need?