Thanks for feedback - have already looked into getting stronger cables as this seems to be a reoccuring issue with the jks discos. I guess a handful of cable ties will also be a good backup.
Also found an interesting post on the L.O.S.T site regarding fixing the bumping and rattling (
http://www.lostkjs.com/forum/phpBB2/...ic.php?t=16895)
I think I'll try the longer bolts and see how I go.