The B series tractors do not have a mower height adjustment knob like the BX series do. The B tractors use ground contact mowers and the BX series suspended deck mowers.
To answer the first question--NO--there are not any pin up points on the rear of the deck--just the two front ones. Sometimes I --ususally--have to lift the rh side slightly and pin it and then the LH--same thing. It is kinda a pain working in behind the FEL mount. Once you pin the front two holes be sure to lift the rear center double wheels up to their highest--retracted position to increase ground clearence. Generally for other than light work--I remove my MMM. Anyways, the rear of the MMM will move up and down slightly with the 3-point lever but not much. It works just fine /forums/images/graemlins/smile.gif. Yeah, I do wish it had the BX suspended deck with TOP detent and suspended deck /forums/images/graemlins/frown.gif. J