M&R bought Precision in the Mid-1990's ... I am certain they still have ALL the documentationWe just bought a Precision Vortex gas dryer, and it did not come with a owner's manual. Is anyone familiar with the periodical maintenance required for this dryer? We noticed that the belt started to shake more than usual, and we had to add grease to the bearings, but I was wondering what other regular upkeep needed to be performed. Any help would be greatly appreciated.