Unsolved How to adjust evdevtouch sensitivity

[jastmc]

We've recently had to change our touchscreen supplier and the new touchscreen is more sensitive/lower resistance than the old one. So, using evtest, I get values continuously whether I press the screen or not.

How can I change the sensitivity (or pressure to activate) for an evdevtouch device?
Can it be set with a Qt export?

Regards,
Jas