My new speedo with only 1700 miles has been wagging ever more in spite of reworking the lower drive and the cable lube. The moly lube was a mistake as now any seepage is gooey black.   After about 100 miles today the speedo quit. Again.   A close inspection reveals the brass insert for mounting the lower drive had walked out. The gears inside appear good. I'll use the Lubriplate this time (leftover from Lionel trains and the M14) and some adhesive to bond the brass plug into the drive. For r