Unfortunately, we do not deal with variable-pitch propellers. All the tasks we solve conventional propellers, which are much more reliable and cheaper.
Mу friend has CT-SW.
He have bought an expensive german propeller with adjustable pitch to replace ours.
His goal was to achieve 300 km / h.
But as a result he had gain no additional speed.
And the price was about 2800 euro.
The adjustable pitch does not increase speed by itself.