The manual for my b2150 says that to engage cruise control you stay in low or mid range, move the small lever below the steering wheel to “on”, have the machine traveling at the desired speed, then engage the cruise with the long lever to the left of the steering wheel. When I try this the long lever will not move, so cruise will not engage. What I can do to engage cruise is with the small lever in the “off” position, get to speed, move the long lever into position, then move the small lever to “on”. To turn cruise off I have to reverse this process because pressing the two brake pedals will not cause it to disengage. This seems overly complicated, dangerous, and is not consistent with the manual. Does anyone have any ideas what could be wrong or what I could be doing wrong?