Not sure if someone has said this, but probably there was. I would change all the filters on the machine at least once during the machines warranty period. You may find things that have been collecting in there that may indicate a problem. It would be better to know that while you still have a warranty on it. If they look clean, I think an argument could be made to put them back on. Most likely though, one of your filters will have a lot of metal shavings in it from the manufacturing price. My hydraulic filter did, and many others on here have found that too. However, I would want to make sure that there were enough hours and use of the hyrdraulics though to make sure it has worked them all out to the filter. Would be best to find a job for that tractor to tackle.