Ohh right yes, now I get what you mean. My brain just immediately went for "GC knobs" when you mentioned "knobs", but in my defense I'm running a 40°C fever so

Ohh right yes, now I get what you mean. My brain just immediately went for "GC knobs" when you mentioned "knobs", but in my defense I'm running a 40°C fever so I should probably not be commenting at all