I have a Hitachi rev78 drive that is not reading disc / making scratching noises like crazy so I want to replace the drive. I have already saved the key with jungleflasher My problem is I am unable to find rev78 drives from anyone I would trust to buy from online for a reasonable price. Everywhere I found wants ~$35+ for rev78 drive but I am finding rev79 and 59 for ~$21 I do not care about Live but do plan to mod the drive to play backups. My question is can I replace my 78 with another revision? From what I have read I should be able to use any revision if I swap the PCB but I would like to just flash my key to the new drive that way I have 2 "working" drives. I believe only the 78/79 are interchangeable in this way, is that correct? So my plan is to buy a rev79 drive and flash the old key to it. Also flash a modded firmware which I have not chosen yet to allow backup games to be played. Thoughts?