Well, I had some thoughts about riding 1600 km on the AT, as the seat is nothing compared to the Varadero. But in reality it wasn´t that bad, and together with shorter stages between the petrolstations than I do on the Varadero, it never got a problem on the December, and solo ride.
Otherwise with the January, and sidecar ride. As the ride went on, I started to get a pain in the left of my butt, so I had to move a bit around on the seat, to change the pressure points. I wondered why, and came to the conclusion that it was caused by the sidecar.
When riding three-wheeled you are steering all the time, because it´s an asymmetrically vehicle. The vehicle should be adjusted so that it´s steering is neutral at normal riding speed, but when going faster, the sidecar will drag more and more to the right, and opposite when releasing the throttle, then the sidecar will drag the vehicle to the left (of cause it´s the opposite with an english sidecar vehicle). Riding motorway most of the time, I was riding faster than I usually do, so the bike was dragging a bit to the right all the time, and to compensate for that, I was constantly steering a bit to the left... and pressing my left buttock in the seat, making it hurt after some time. But, when moving a bit around the seat, I could handle it.
Besides that, I didn´t have any problems worth to mention on any of the rides. "The Camel" just goes on and on and on and on, in fact I´m quite impressed considering it is 26 years old