the H pattern can seem ok but you could be shifting into 3rd and 4th in both
locations. i had this happen on a customers van that had some worn shifter
parts. i rotated the shifter shaft on the splines one spline over. these are
the splines on the shifter shaft near the u-joint where the forward shaft
meets the rear shaft. one spline at a time. one spline makes a big
difference. make a mark for reference. i just use a scribe to scratch the
valley in between splines.