In Reply to: N5 posted by michigan on October 17, 1998 at 21:50:48 EDT:

If your machine is equiped with a stone trap door where you use the same wrench to close and to latch the door it is likely caused by one thing. This initial setup was designed so that every time you adjusted your concave clearance you were also to adjust your stone trap latching mechanism. On the N Series the front of the concave and the back of the stone door floated together when you adjust the concave. Begining in the R Series they went to an independant latch mechanism and a two wrench system. There is also a change up for the N Series. Try first to adjust your concave with the door open, then try to adjust and latch your door. Hope this cures your problem....