Can't see how to open C66 printer

Yes, I'm afraid getting the covers off this family of printers is a nightmare - but possible. I have done a few but usually wished I hadn't bothered! Anyway - here's some notes on the job:
Normal 0 C6x and C8x Family Disassembly Notes Removing the end covers is the most difficult task. The service manual is very confused over this. Do not remove the thin “end plates” (dark plastic) - these are merely decoration. RHS and LHS are when looking at the front of the printer (opposite way round to the service manual). In the service manual, the red hooks hold the end covers, and the blue hooks the main centre cover..
End Cover RHS Release the hook at the top rear, and the two “prong hooks at the bottom, then prise the end cover off as far as possible. The end cover is now held on only by two hooks deep inside the cover (top front corner and top centre). It is impossible to reach these two hooks – brilliant design eh! These hooks are orientated downwards, and you need to lever up the flexible edge of the cover at the top, whilst trying to push it off. Do the corner one first, then the top one. The hooks are easily broken, so care is required.
End Cover LHS Release the hook at the top rear, and the one “prong hook at the bottom as before. There is a small square plate underneath with a >slot next to it. The purpose of this slot is not to release a hook inside, but to permit you to prise up the cover so that it can slide over this plate. There is also a similar slot near a foot – this appears to have no purpose. Then do the top hooks as before.