The 3” pipe adapter (stove to flex pipe adapter) that came with my kit was not the right size for the Winslow PI40. I made it work with a crimping tool and a lot of high temp sealant but I am going to be removing it to clean the pipe and wanted to get an adapter that will fit better. Do any PI40 owners have any suggestions? Do your adapters slide over the pellets exhaust pipe or inside?