Are those 38's? I wonder how much speed difference there is in low reverse between 18.4 & 38. Too bad there wasn't a lower reverse rather then a 3rd high reverse..although I know TimS liked high reverse for stabbing rounds and then getting 4 /7 forward. The 790 4x4 also has a problem between hi low and its reverse gears. Mowing in 4 low is about perfect until you need to reverse which is too slow...be good for a blower though and high reverse at pto rpm belly mower is like drag racing.