Thanks for that, Col. You're right though, it's all in the adaptation and getting used to doing things a different way. I don't like that knob idea, either. Seems to me that a slider is more tactile and easier to judge in the split second you sometimes have to make an adjustment.

The weight thing would be a major factor as I'm only a whisker behind you in age. It's a bugger, innit? smile

Cheers, 124