Nakamichi BX-100 cassette door stops motor

I picked this deck up from a friend who said he plugged it in and it worked for a short while then stopped. Hadn't used it for years. I replaced all belts and capstan tire, but still would not operate. After a good while of looking around, I realized that unit will work, but only if the cassette door is pushed inward just a very small amount and seated. Let go and it stops again. The push is only a 16th of an inch or so. Is there an adjustment for this door so that it locks fully seated?

Thx
Mark