+ 1 for getting a bigger motor if possible. I did a whole fresh ham on my rotis, and the OEM Weber motor was crying out in pain the whole time as that unbalanced load flopped around. I was so relieved that it survived that I did a little basic maintenance on the motor, which quieted it down. My current plan is to go ahead and use my Weber motor, then look into upgrade options when it finally dies. A bit more horsepower will make those big cooks a little less nerve-wracking.
What type of mods? grinding/drilling for fit or more involved? Good eye Big Al,The Gleason motor did require modifying a SS roti mount that i bought off of eBay. It is the standard 3 in mount like the weber/CB, but some slight mod was necessary to align the spit with the motor (friend did it for me).These aren't the best pics, but I can provide more detail if you like.These Gleason rotisserie motors are tanks. A bit expensive, but you don't have to worry about unbalanced loads. I am thinking that I may have to get a 26 in CB ring and spin a suckling pig soon