Set 1 has X Gear Gold spring set and grooved seals:
http://cgi.ebay.co.uk/ws/eBayISAPI.d...:L:LCA:GB:1123
Set 2 have no springs but have grooved seals and tapered pistons:
http://cgi.ebay.co.uk/ws/eBayISAPI.d...:L:LCA:GB:1123
Please see links, no buy it now so please don't ask!