I have a 98 JD 345 and unfortunately it has the dreaded plastic cam gear. My friend who is a mechanic and a gear head told me I need to replace that cam gear with the steel gear NOW! Before it goes. I was wondering what else I need to do when I do it? My hour meter reads 490 hours. I remember reading about it somewhere and it was said to go ahead and replace the gov gear/arm/washer/sleeve, oil pump and water pump while its apart. Anything else? Also Could someone help me out with the part numbers? I would like to order my parts from greenfarmparts.com while they have this sale going on.