Technics SL-1650

But built completely differently than the SL 1200 original or MK2.

I have a 1650 that was thoroughly degreased and works well, even cycles through a stack of six albums, very well…..except, at the end of a single record or the end of cycling through a stack, it will operate as if stuck on R on the monogram even though it reads zero. Any ideas? I’ve been playing with this for hours trying to figure out what is wrong. Thx