I had one of these for a couple of years which I got new when they were being blown out. It was a fun bike. One I wish I'd kept even if just for how rare it is. The only problem I had with it was it's tendency to toss the chain off the mid drive over bumps. At the time I remember a number of home brew remedies being discussed online. The mid drive shifter is a unique part but I believe Shimano bar end shifters (and probably friction thumb shifters if you can find them) would work if that ever fails. This was an interesting time for recumbents with Cannondale also getting into the act. I moved on to a couple of other recumbents before going back to uprights but that Trek was definately a fun ride.