I have a new motor, I've not yet opened it up, but it is just 3 screws where the original was riveted and would not have been easy to clean and regrease and close back up. The 30 year old original one, I will assume Lubrication failure played a big part. The lube was dry, and the consistency of blue cheese, with all the plastic of the failed gear. Any Idea what material this is, and what would be the best grease to use if I decide to open it up? The newer motor with a sept 2018 build date stamped on the motor body, feels a smidge lighter, and does not appear to be as well built as the original. It is neither a difficult, or costly part to replace(32$), but its failure of course happened at the worst possible time and was inconvenient to say the least, and dangerous, So I would prefer this one to be able to last 30 more years, but I have little confidence it is as well built internally as the original, with replacement parts being what they are today.