I replaced the original 2012 Left Damper, which was sticking, and silicone spray did not help. Rotation was impeded I'm sure. I am really happy that it includes a new outlet temp probe, as mine was also original, and pretty well coated with roasting residues. Wow! Changing these definitely makes an improvement. I have no more temp / thermostat issues (heater cycling on/off at temps less than set, and then kicking in to continue rise), and I confirm that my roasting is much improved. And of course, the coffee really does taste so much better!
Fit perfectly - no fiddling with anything. The chaff collection chamber was a little tight to slip in, but I heated to 150F, then cooled down and it slipped right in. And now in/out is easy.
