last month, I bought a new 2014 tracker pro 160. it is a good looking, well laid out boat, but from the start, I have had trouble with it porpoising above 22mph or 4500 rpm. this is with one or two person in it. the boat has the 40 hp mercury. i have to run it with the trim all the way down or it is very uncontrolable. The dealer first told me that trackers did not porpoise. he then told me that it was operator error. after he tested it and realized that I was right, he lowered the motor all the way down on the transom. it did not help. the dealer and tracker want to do some welding on the transom. the boat is at the dealers now. the boat is dangerous and almost unusable as it is now. my question is it right to have to weld on a new boat or should tracker have to replace it. thanks.