I'm repairing a Nakamichi CR-7A.
I screwed up.
First I lost the small milky white washer on the idler wheel.
Then second, I lost the whole idler wheel.
Because I didn't have the washer on there, the idler wheel fell out and I can't find it anywhere.

So, can someone help me?
Does anyone have a spare idler wheel (with washer) they can sell me?
If not, will a BX-1 idler wheel work just as well?

Any help is appreciated.