and backward horizontal control 128 preferably a hydraulic ramping control is integrated into controller 116 allowing for smooth starting and stopping of each jack system 12 one such control is available from cpm group 4120 se international way suite 107 milwaukee oreg 97222 503 794 0708 lifting system 10 also includes a track assembly 130 shown generally in fig2 and 3 preferably including parallel segmented tracks 132 turning now to fig9 11 each such track 132 is made up of separable pairs of segments 134 formed from rails 136 interconnected by a tab 138 each segment 134 includes ends indicated at 140 with protrusions 142 extending outwardly from rails 136 adjacent each end 140 a hole 144 is formed in each protrusion 142 adjacent pairs of segments 134 are connected by segment connectors 146 including a plate 148 with one or more handles 149 and one or more pins 150 extending upwardly from plate 148 to define an upper end 152 a lever arm clamp 154 having a lever 156 operated by a handle 158 is attached to plate 148 so that when actuated lever 156 clamps upper end 152 of each of pins 150 tracks 132 can be leveled with shims 160 for reference a house 162 is shown in fig1 and can also be referred to as a mobile home manufactured home portable structure or completed module each module 162 generally includes a subframe 164 including a pair of i beams 166 defining one or more vertical surfaces 168 shown in fig4 a foundation 170.