Has anyone figured-out how to modify a 750 so you can plant between the 2nd and 3rd notches on depth? With new blades the 2nd depth is too shallow and leaves beans on the surface and the 3rd notch is 1.5" deep. BTW, I have been running CIH depth wheels, CIH firming wheel and cut down martin closers for 4 years and the system works temendous in no-til.