In reply to Newbuild100:
Did you say to the Ribble dude, 'I wasn't asking whether you'd ever been asked about frame protection!'
Quick bike terminology lesson:
The nut/cam (plus the metal rod to which they are attached which passes through the hub) is called a quick-release (QR).
The area of the frame and end of the forks to which the QR clamps is the dropout.
Place the wheel in the frame/fork, ensure it's central. Hold the QR lever about 90 degrees to the wheel, screw up the nut until it snugs up to the dropout. Close the lever: this should be able to be done fairly comfortably by pushing with the palm of the hand against slight resistance and you should feel the lever cam over and see the dropouts be squeezed together slightly.
If there's no resistance then try again with a half-turn or so on the nut. If it's taking all your strength or you can't fully-close the lever then slacken the nut.
Letting the cam do the work is the key. I've seen loads of people who think QR's work by tightening the nut as much as possible with the result that the lever is either not fully-cammed over or you need to be Arnie to undo it.
Also make sure the lever is not trapped against the frame or forks as this can prevent it fully closing. The rear can often sit neatly between the chainstay and seatstay, the front is often best lying parallel to the fork leg.
As for the QR scratching the paint on the dropouts, I wouldn't worry about it as they are thick pieces of metal so will easily outlast pretty much all other bits of the frame. Don't put any washers or anything on them, you want the best purchase between the QR and the dropout.
Apologies if any of the above is teaching you to suck eggs but I got the impression you've not had loads to do with bikes. Let us know how you get on .
Post edited at 21:26