I probably should not have used the word “catch”
The control just do not work most of the time. YOu turn them and they do nothing and then suddenly afetr a few seconds they respond.
The time it takes for them to respond is random, there is no pattern.
“Turn Knob” = no change in parameter (hence “sticky”
Then suddenly out of the blue it will respond. This would be a performance nightmare. Imagine you are going to change the filter cutoff and the corresponding knob just doesn’t want to respond. But then after twiddling it for a few seconds it suddenly responds.
OS 3.1 bought from Juno UK last month