Last weekend we also were getting used to the new pitch trim spring. Elizabeth is sure yet if she wants to slow the trim motor down or not (our buddy Andy did on his with a resistor), but we did test the front seat loading up to 500 lbs. with good results. It runs out of trim right around 500 lbs at pattern speeds, I think it would trim out OK at speed, but this is a good data point for the max front seat loading.