On Monday, 22 April 2019 23:46:07 UTC+1, Roger Hayter wrote:
A simple job turned really difficult.

I'm glad it's not just me.

And of course the new knobs are only affixed by 3 screws through the rose - except that one of the screws is almost bound to foul on the latch barrel and not go in full length, and it's impossible to drive them in straight because the rose is smaller than the knob so the driver has to go in an a nangle.

The old stuff with grub screws into tapped holes in the spindle really was a better design.

Owain