Just grabbed one of these from Trainworld for a reasonable price. As noted elsewhere it was very fast with barely audible sound at rest. I did the surgery as I had with my Baldwin Sharks. Now it is slow with very little variance through the throttle arc (CW-80). It does go slow. I turned up the pot but I think it was already maxed out, I adjusted it clockwise and counter clockwise. But I can hear it now, though it doesn't rev.
I am not sure how well it will do switching. A bit disappointing.
I'm wondering if it could be the CW. I got 2 in sets early on and they are still my fallback for conventional running. That chopped sine wave thing is starting to bug me. My MTH PS2/PS3 don't seem to like them. I have a ZW and a 1033 for old school control but as I have already toasted one board in a derail I'm hesitant to use them until I get breakers for them. That or I may buy a MRC Throttle pack. Are those all full sine wave?
BTW, I have 2 Lionel 44 tonners. They don't even like like they come from the same prototypes. Maybe I'll just call them 88 tonners. It is my railroad. The PRR took a flyer a few years back and ghouled the coupler. I think I may have to just replace the whole truck. The LV is new to me, looks to be an MPC.