IF you need LOC sleds, Call up CTR Surplus in Crestline, Ohio and ask them for stock from the "MASSIVE WALL OF OLD DVDS".
You'll need to give them a model year /speed range and don't tell em your harvesting the lasers or they will NOT sell to you.
They got stung for selling used industrial lasers more then once by the FEDs and will not even sell you a hene without the cord cut off.

6$ a drive + shipping.

Steve