Cannot get Dell stylus to work on Venue 11 Pro (model 7130) with Windows 10

Subject line says it all.

Windows 10 installed (build 10240), all patches applied. Up to date through Windows update.

All Dell device drivers installed - at least those auto-detected for my hardware on Dell support website

But ...... the pen is essentially inoperable. Only way to get any sort of pen input is to hold down the button clsest to the stylus, but that just produces on on-screen small cursor that tracks any pen movement, even if the stylus is ~2cm away from teh screen!! I can't draw anything in pen enebled apps like Paint, OneNote etc.

Is there a pen/screen device driver available that isn't listed on the drivers for the Venue 11 pro running Windows 10???