Hey Brad (Scrollsaw703)
Good to hear from you. From my perspective what I'm doing is covering my bases to ensure I never have any downtime. Use one DW788 for daily cutting and if/when it fails, starts making noise, whatever... I simply swap it out with another DW788 and then when I have the time, perform maintenance/repair on it.
I haven't cracked one open yet, but I just received the spare bearings and sleeves I could possibly need and I plan on getting my hands greasy the next rainy weekend. My first DW788 starting making noises back in December while I was frantically trying to cut puzzles for upcoming shows and I simply bought another one, new and that's what I'm using now. The noisy one is waiting for me to replace bearings and/or sleeves along with greasing the ones that don't need replacing. I'm looking forward to learning how to maintain them. I want to be in a position in which I'm using 1 saw and I have 1 ready to swap out immediately if needed. My 3rd one will be part of the rotation and when one has a major break such as the motor, the mother board or one of the linkage arms I'll use it for parts only.
I should be set for a couple of decades now. ;-)