I have a 2" duckfoot cultivator I'd like to use on my 140. It's set on a 2" toolbar though, and the 144 clamps I have are only 1 1/2". I've shopped for bigger clamps, but to no avail. I also can't find smaller clamps for the s tines. I've seen a diagram whereby you clamp some rod pieces to the 1 1/2" bar that then also get clamped to the 2". I'm not schooled in fabrication, and don't know what to look for. I think doing it this way would give me better clearance, as it would push the cultivator back further, but just don't know how to make it work out right. Am I better off shimming the tines to the 144 arms? I'm guessing that would fail. Any help would be much appreciated.