Long time ago we had a ZX5 and even then I was confused........ manual is part of Jimmy's review,
http://www.oople.com/rc/photos/zx5/
Front parts page=
http://www.oople.com/rc/manuals/zx5/...s/zx50028.html
and this is from eBay:
http://www.ebay.co.uk/itm/Kyosho-LA2...ht_1746wt_1140
and this:
http://www.ebay.co.uk/sch/hobby_japa...4.l1581&_pgn=2
I am sure between Roger & JEspares you will be able to sort out the exact parts you need.