PiezoDN Pt linearization

New to PiezoDN. Need som help with linearizing the Pt curve.
I printed the 256 PiezoDN target on Revere paper using MW print out method and measured with i1 pro spectrophotometer and this is what I got:

Certainly no where near linear. I would appreciate your input…not sure where to go from here.

I think you can halve your exposure time/amount.

best,
Walker

Thanks Walker
I did linearize and save the curve and installed using install command, however it does not show up in Print Tool…all the other PiezoDN curves do…any suggestions?