Hi All, I`ve owned a YM2200 for 12 years, and now it`s getting sick, so I need a source for cyl. liners, pistons, rings,and gaskets.Not an issue,but the last five digits in the eng. and frame numbers do not match,are they supposed to on Yanmar? Also I have a chance to buy a YM3000, which I know nothing about. I`m sure it`s a rebuild, so what I look out for? Thanks in advance,this is a fantastic site, and you guys really seem to know Yanmar.