Problems with Rear Mechs

Thanks for a comprehensive article. I looked at it to confirm the orientation of the jockey wheels because even the diagram in Shimano's own manual is not that clear but the sentence "The writing should face outward when installed" is clear and concise.
It is the first time I have seen the tip about putting the chain into the middle cog to assist in checking the alignment of the mech - I'm going to do that right now!