No problems except transmission seems to have trouble shifting out of second gear if going slow. if you get on it and go it shifts just fine, but it struggles to shift when lugging around.
Great truck.
I have had it for less that one month, but so far have pulled:
A 5500 lb trailer.
A 10000 lb trailer.
A 5500 lbs trailer with 15000 lb forklift.
A 3500 lb trailer with another dodge ram 1500 on it.
This truck really can haul a lot of weight.
It is not a comfortable as a chevrolet 1500 but it handles and drive very well.
Everything works great and is still pretty darn comfortable.
The next addition should probably be trailer brakes, although I haven't needed them yet, and that is a lot of weight to stop with only the trucks brakes.
I haven't tried towing with my truck, but I have noticed the same in the stick shift - just watch the RPMs. Some manual transmissions don't care if you start in 1st, 2nd, or 3rd (usually the cheesy Fiats ;) this Dodge Ram 1500 allows you to put in quite a bit of power in 1st gear.