odd combination nof a wanhao i3 maker mk2 and the creality bowden extruder.

Have you converted it to direct drive yet ?
That would be the first thing I'd have done. You've got dual z-axis steppers, so absolutely no reason not to and several to do so :-)
Should be a s simple as a printed bracket - bound to be one on thingiverse :-)

Glad we could be of some help.