Flow problem with KK flow control taps

[Truman42]

I found with this style of tap that the position of the flow control cone when attached to the font/shank effected the flow. I found with mine that they would sit further into the cone if the flow control was not in the full stop position when installed, reducing the space between the socket and the cone, causing restriction even when fully open. If I installed the tap with the flow control in full stop (or as much as it can be when fitted) that I got the full range of flow control.

I tried the various ideas but this one above is what fixed it.
If you have your flow control set to fully open so the cone is pulled into the tap as far as possible, when you tighten your collar up you dont have enough movement of the cone. But if you put your flow control to fully closed and tighten your collar up the cone stops you from tightening it too far and you then have further movement. It now pours at a decent rate and I can throttle it back if need be.

Thanks gents and thank you Blackbeerlove