DoubleTap settings

Hiho
i have a small probelm with my beloved m8.
I accidently recalibrated the touchscreen. So no big mistake, everythink works good. But i cant geht the doubletap thing...
Is need to doubletap so damn fast that it works almost every third time i try to do it. It sux like hell when i try to close m8dock.

With the calibrator in system control i cant change it. I tap like hell on the litte squares and everything seems good, but then on the phone again it most doesnt work right.
I need it just a bit slower, so i thougt there must be a registry entry for it. Anyone knows about this? any idea?

I would thanl myself i i had a button
Guys this is it and it did

The HKEY_CURRENT_USER\ControlPanel\Pen registry key sets the value for the stylus. The following table shows the named value for the Pen configuration parameters.
Value : type Description DblTapDist : REG_DWORD Default setting is 20 pixels. Indicates the size of a reference rectangle constructed around the location of a stylus tap. If a second tap occurs inside the rectangle within the allowed time, it is considered a double-tap.

Set to 30 pixel an everxthing is good again