A couple more questions please. 1) How do I validate the serial number to the year of mfg? TractorData doesn't have sn's for Kubota. 2) putting a skid plate on will not impede mmm function or mount/dismount process? 3) drove the tractor, was not prepared for the occasional clunk of what the dealer said was the mower deck moving slightly when going over rough terrain (made sense to me, heavy deck, flex mount, just had not driven a machine like this before). Noise was definitely not from engine or operating hydraulics. So it does make sense, yes/no? Thanks.