Hey guys, when I started up the plane, I tested the rudder trim and I didn't get any indication it was moving. My mechanic came to look at it and he confirmed thst the rudder trim wasnt actually moving. He went to the after service bay and saw that the micro switch in the back was dirty and he cleaned it a bit. Now my rudder is working but the indicator still shows center (it doesn't move). I believe it has something to do with the pentometer but I'm not exactly sure or where that is