Older hitec servos and new sanwa rx issue
 

Has anyone ever had an issue with trying to use older analogue servos with a sanwa rx472 rx...the handset is set on normal for the servo and when you turn the esc on the servo moved by itself and starts to get warm?..now when I try the same servo in a spektrum rx and spektrum tx there’s no issue at all... I think I’m just gonna have to buy some new servos...