I just bought a used 2000 LT155 and am confused as to what maintenance is required for the 38" mower deck. The manual covers lubrication for spindles on the Freedom 42" and the 48C, but doesn't say anything about the 38". I also don't see any grease zerks on the deck. Do the spindles on this deck not require any kind of lubrication? I'm sure something needs lubrication because when I engage the mower, there is a squeal for a second or so, but I'm not sure what needs lubrication or how often.