I keep getting deep yellow smoke rolling out of the pellet hopper bin, I have taken the unit apart and discovered it was a failed gasket (at least I think?) Like, it almost starts a fire in the pellet hopper bin and I have to hose all the pellets off and they of course fluff out and I have a huge mess to clean up. I tried a high heat roll of gasket from Amazon and it worked for about 2 weeks but already doing it again. Anybody else having this issue? My Lexington 540 is probably 3-4 years old. The gasket location is hard to explain, but if you have worked on these I think you’ll know. It’s the flat spot when you put the hopper box back over the auger/fan etc then screw all of the screws back in