I started the fire on December 9th last year, burned 8 ton till I shut it off in April. Not 1 time did my furnace fire need to kick on to "help" the boiler keep up, actually while the furnace would be on a heat call the 260 would cycle off after 6 minutes! In comparison I burned 10 ton in the Leisure Line and 20% propane usage on a 500 gallon tank. While the furnace fan would cycle the boiler temp would plummet and require the furnace fire to kick on to keep the boiler temps from dipping to low. This would only happen on the coldest/windiest days when there would be long fan cycles to keep house at set temp. Still, the fact that I burned 2 ton less and never needed help, no comparison in my opinion. My neighbor bought a 260 from Ziggy so I'll be working on getting his setup this winter!
Oh, I'm just going to reach down in and put some high temp silicone around it with my finger.