[codefox1]

The mica sheets are oh so fragile, and if go gunked up, should be cleaned up very well. Tak 'em out and blast out with Deoxit 5. Before that , tighten down each segment all the way and count turns and fractions very accurately. Then blast it out with deoxit 5 and treat the mica strips with utmost care. Let dry the parts overnight and put together the next day. Tighten down and back off to recorced turns. You should be approximately where you were in the beginning. Then re-align. Works most.