Nic, Same issue with my 129, 1250, 1450. I put the blade in position and put a length of 6x6 under the the end to point the rears toward the rock shaft. A couple of 2x4s under the pivot point of the blade to lift the pins up. A couple of shims get everything at the correct angles. At that point I kneel next to, looking under the cub and can usually make any small adjustments by hand as I slowly drive it forward until I get the pins locked. If I got the heights right I just pull forward until the frame slides off the wood and pull them out from under. If I get it a little too high, a hand sledge to the shims is the ticket.