The trans is in good shape and from what I can tell, that's the only place it seems to be leaking. What else leaks on these transmissions? This is a 2wd 5spd. And also, could the leaky input shaft cause the clutch to slip? My clutch slips mostly in higher gear on the highway when I'm RUNNING FAIRLY HIGH RPMS... which is what makes me think the clutch is getting grease slung all over it. Anybody else run into this? Theoretically it makes sense to me.
Also, could the axles being bad cause the engine to sorda "lope" along at low speeds? Feels almost like it has a wobble in first, sometimes second gear. Doesn't happen in any of the higher gears, nor when I'm just revving it.