Funai VP 1500 Old Rental VHS Player

[tvcollector]

I found an old rental VHS player with case at the local Goodwill, I opened it up to find out the Capstan belt turned into gunk, it was a project alone, cleaning that mess up, well cleaned it and replaced it with another belt i have.. It works now, but i notice when i put in a home recorded tape recorded in SLP mode, it stays running at SP mode. So I'm guessing these old rental VCRS only play tapes in SP mode..