E153 w/ LSD issue, LSD setup wrong? Options

[Punisher]

Ok.. I had aamco install the LSD on my e153.. here is the info

99 camry v6 5spd
95 jdm mr2 vlsd

Ok.. I took my trans to aamco and told them to install the mr2 diff.. the differential had the speedo gear on it already..

Reason I mention this is because my speedo started to work erradicly lately.. and I was fearing what I found out today.. I pulled the speedo unit out of the trans and the gear teeth on the unit were worn down to ****..

Also when I turn the wheel even the slightest bit to the left or right (especially the left) i get a grinding noise.. Now when I helped my buddy work on his WRX trans.. we put the differential in wrong.. didn't set the proper preload and he had the EXACT same noise as I am getting... then he had subaru set it up and all was well.

I'm just wondering if there is anything I could've screwed up myself during the install of the trans/axles that may of I dont' know.. shifted? the differential or something... cuz I can't come up with anything..

I don't know WHY the gear teeth on the speedo are worn down to nothing either.. how the diff might've been installed wrong to cause that I don't know.. any idea's?

The differential came with the speedo ring gear only.. I gave aamco an alltrac diff to take the drive gear off of that to put on the mr2 LSD.. which they did.. atleast I think.. cuz they gave me the alltrac diff back minus the drive gear..

So as far as I can tell I don't think I screwed anything up on my end.. but any idea's on this would be helpful.