bought the porter last year. have done 3 cars. after the 3rd, seems like the porter doesnt have enough power or torque. results were good, but didnt seem to get all the swirls out with orange pad lake country 5's and wg swirl remover. was pleased, but a lot of effort to still see those swirls when the sun is just right. cant seem to apply enough pressure when doing passes to keep the porter from bogging down. any suggestions?