Optical drive will not open

I followed the repair guide for this issue, though the optical drive still will not open when the button is pushed. I can hear it trying and was able to get it to work once with the help of a spudger. Is there a common issue that I may be overlooking? I cleaned the rails, as well as the rubber belt that controls the movement, but nothing seems to be working.

crwdns2893858:0crwdne2893858:0 crwdns2893862:0crwdne2893862:0

crwdns2894050:0crwdne2894050:0

crwdns2889612:0crwdne2889612:0 0
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