I believe ours are already like that, top and bottom spring in the assembly are same length. Where are you atIJ Got lucky here right after election day and had a little over a week of good weather, managed to get about 40 to 50 acres a day in. On the last 47 acres our cousin was in the neighborhood with his 1660 and had him work on the muck and some of the softer areas since he had his duals on. Sure felt bad about both of us running 22 foot heads and lapping him once in awhile, tried not to do it to often, didn't want him to get p-ssed off and go home before we got it done!!!