I'm with you on this, it is odd. May be the same as the manual saying only 3 weights per wheel on the MX's... Who knows?But don't deep rotary tilling and harrowing require more pulling power which are listed as acceptable uses of creep speed? I still don't see what's wrong with driving on or off a trailer in C1? I'm dropping off the tractor this morning and hopefully the manager will be there. He's very knowledgeable about tractors and if he doesn't know I have no doubt that he'll find out.