Thanks for the replies.
Kiwi - may have to look into the foam hardcase - are they the silver ones about the same size and shape as the old hard school ports?

Keefy - thanks for the link. They seem to be able to take a bit of a hammering. I wouldnt be doing that to mine I hope!! - I am fairly careful with my gear. I am more worried I guess about the fairly constant vibration particularly when on gravel.