Couldn't repair the optical drive, it never seems to be able to seek the data on the disc. Will need to find a replacement Pismo optical drive as my current solution (an Intel iMac slot loader drive) leaves a nice opening in the side of the case that i'm not particularly fond of.

Also seems to be finicky still. No boot, I push power, the Caps Lock light comes on, but that's it. If I remove the Processor and reseat it, the machine boots. Has worked every time so far. May need to get a can of CRC and clean the contacts on the processor, or would the fact it has no PRAM battery contribute to this problem?