touchpad cursor movement

Recently I purchased a Lenovo S340 for my daughter and installed LM 19.3 on one drive and MX 18.3 on the other drive. I have not been able to adjust the touchpad cursor movement to my liking. It seems to be the touchpad surface size relationship to the screen size. In other words if I place the cursor in the top right of the screen and my finger on the top right of the touchpad, I would expect as I moved my finger kitty corner to the lower left of the touchpad the cursor would follow to the lower left, but it only goes about 2/3 of the way on the screen, which necessitates another finger movement. Annoying to say the least. I have an S310 Lenovo that the touchpad works perfectly, and a 1" finger movement will span the whole screen. I also have a Thinkpad E15 with Qubes installed which has problems similar to the S340.

I have looked at xinput list-props and I can't decipher which attribute might effect this, unless it is the coordinate transformation matrix. It seems this would be a simple solution, but I have not stumbled across the answer yet. Any advice would be appreciated.--Thanks!