Zero Turn Mowers

I purchased a PZT 5224 last summer it currently has 80 hrs on it, it recently has developed an unusual noise coming from the hydro [I think] it runs fine just has this rumbling noise when operating with or without PTO engaged almost sounds like a bearing?? also at 60 hrs I noticed both belts need to be replaced, this is my fourth Husqvarna ZT. and my sevicing deale HAHA I have not even notified them [yet] this mower has never been outside overnight, and I am sure it will sit in their outdoor storage I did not pay 8000.00 for a mower to sit outside, not even in a secure storage. I am Very disgusted. Oh yeah and the dealer was supposed to register it for warranty along with the two husqvarna bacpacks 580's... I will bet that never happened.