Kjell,

On those electronic pots you refer to I guess you are talking about the Variable Rotating Transformer or RVT, if this is the case, I think we are still far away to have them miniaturized to the point it will be usefull to install in a servo, It will come, but talking about size and weight, potentiometers will still be there for a long while.

Maybe manufacturers should use better potentiometers but then the servo price will be so high that no enough demand will be there for them, all this come in play.

I remember one time I needed to replace a pot in an Jetstar because it had a flat spot, the pot was around $700, first I complainted, then realized it has been working fine for 11.000 Hrs and 30 years (I was younger than the aircraft at that time), expensive, but it does last.

Cheap pots might well be the problem.