It seems that each time I withdraw and insert the wood chip tray the fit gets tighter. I've only used the smoker three times. First was to season it, then to make meatloaf and brats and Sunday with the butt. I hate to force anything, as it usually means there is a problem. But everything look kosher, yet it took a lot of force to get it to slide into place and I barely was able to extract it at the end of the day, after it had cooled. Have other owners of this unit experienced this? Any idea as to what's going on?