Thanks Mike...

LoL. I just added a bevel before adding the little top part. At that moment I thought it was better to first join the little upper part with the rest of the knob and then the bevel.
In your example I see you just bevel first and then joining the little part on the knob....

Anyway, thanks for your time and I'll remake the knob with your workflow.....

Peace,
Rich_Art. ;-)