I heard this pop and then....

I think I am just going to find a set of 3.55 gears and take the whole thing to a shop and have them go through it. I bought it used and for that reason, I really dont know what kind of shape this is in. As far as the pop sound I heard goes...Something for sure did pop, but I still cant find anything visibly broken. It must be internal in the sure grip unit.
Its no wonder I got such a "good" deal on this thing.