All right, about 2 years ago a tranny went out on one of my belt drives... I replaced it with a brand new one and all went well, but now the new one is acting up and I didn't put that many hours on this mower and it's the SAME problem! The mower even sat almost all of last year... Ok, it's a belt-drive 9-spline 5-speed Toro (700-070 is the model of the tranny). The problem is the bottom pulley starts to get 'loose.' This in turn connects to the vertical input shaft and what is happened is at the top the beveled pinion (gear) stripped... Which, that's what's causing the wobble down at the pulley and eventually it just stops working all together. The question I have is, what the heck would cause this to happen? The last tranny I just figured regular wear and tear... But now this one's almost still shiny, the stickers ain't even wore off lol and already it is starting to do the same thing. Would too tight a trans belt cause it? But my other Wb is the same make and model and I am pretty sure I adjust them both the same, this problem's only happening on my old one... I did replace the tensioner pulley assembly, so that's tight... Any ideas?