Mamiya 645 Pro cleaning instructions

What the title says pretty much. I am mostly interested on how to clean the below parts:

- Mirror
- Focusing screen (upper side mostly)
- Glass where the metered prism (FE401) connects to the body

I have at my disposal a microfiber cloth and of course a Giotto rocket air blower. The air-blower did a good enough job at first but there is "guck" especially on the mirror that seems to be stuck on it.

I need responsible/fool proof advice in order not to break/misalign anything.

Thanks.

I own three of these lovely camera's and I never bother cleaning the mirror. Dust or stains on the mirror or in the viewfinder will not have any effect on the final picture. For me, I use a rocketblower to get the dust particles off. For more stubborn bits, I use an artist brush and I very gently remove the particles with light strokes. Using cleaning fluids is fraught with potential problems. Touching the mirror may cause more grime, fingerprints or even damage in the form of misalignment. The mirror stains are not going to harm your ability to take a great picture. In other words, don't do it as there is no upside.

The glass is as easy as cleaning a lens. Mirror & screen need a bit more care.
Mirror: I've used Q-tips dipped in alcohol VERY light if any pressure applied. If there's residue, a breath and another application of a dry Q-tip.
I also use a feather to clean loose crap from the surface. I keep one in a small bag, It's been cleaned in alcohol to remove any natural oils.
screen: feather and if there are any spots, the old Q-tip comes out again. Haven't scratched one yet. Careful.