I just bought a my first Kubota Tractor its a BX1800 only 390 hours I payed 5000 for it it only came with a MMM 52" deck. I have a question siince i just bought it i dont know the service history on my tractor. it only has 39 hours. My local dealer wants to change all the fluids( oil Hyd and Hydro filters, axels ) in the tractor which will cost 450 dollars. Is this over kill or smart.