Replacing Belts on a Sony TC WR565?

Hi: I have a Sony TC WR565 Dual Cassette Deck. I'm attempting to replace the belts. I've got the right side, the Record / playback side working properly. But, the left side, the playback side is giving me trouble. I route the belts on the pulleys, then assemble it. But when I try to operate the controls, nothing happens. The head unit will just sort of stay in a semi-playback position & will not drop down & none of the controls work. (i.e playback, reverse mode, fast forward, reverse, etc). The only thing I can think of that is wrong is that I either have the belts routed wrong, or the gear sprockets are indexed wrong at time of assembly. I have the belts routed the exact same way as the right side cassette well, which is working properly. Or, is the belts routed different between the 2 deck wells? If anyone can give me help, I would appreciate it. Or, if someone could provide pictures of what the indexing of the gear sproket assembly looks like, on the left side deck well, at time of assembly. TIA.