Have a low profile BK Servo in my 2wd buggy. Never having had any experience prior to brushless servos.

By hand, servo has always felt a little bound, super tight and a little notchy/gritty... in any event I'm taking it out and putting it in another buggy and feels pretty notchy. I don't believe I feel this while driving. Given I recall it feeling similar when new I'm thinking brushless servos feel tighter/more bound than regular HV or digital servos...

In any event, is this symptomatic of brushless servos? Normal? Thx