Lower ball joints?

[NS FX NYTRO]

Looking on yamaha's parts fiche there are a number of different part numbers over the various model years for lower ball joints on the nytro. I have a 2008 fx nytro and I see there is a new part number superseding the original part number. Is this the best ball joint to get for my sled? Also there is very little play in my stock ball joints, like 1/32 or so, but you can feel it when lifting on spindle (looking for play) is this acceptable? It hasn't changed in 3000km (the play) just wondering if it's even worth it to spend the money to replace them?
Any input?

 

[drunkenrich]

Read through this
http://www.ty4stroke.com/threads/09-xtx-lower-ball-joints.129149/