OK I got the 422 power trac. drove 26 stright hrs. east TN to Fl and back. I have been reading this forum mostly every day for two years lusting for the 425 but after using the 422 the only thing i think I need different is the ROP. As best i can fugure the 422 has 8" less lift, is a little shorter, 3 less horse power, now but not then (when my 422 was bought new) the 425 had the same wheel motors. this 422 has a stearing cylinder on eather side (2). Do the new ones have only one? why wouldn't the 422 be concidered comerical?