PP Servo and Throttle Slack

I have an older 6.4 PP setup on my 94(RPM no paddle wheel). It is hooked up mechanically, but the module and LCD screen are not plugged in as the PO was going to sell those items separately and I wanted to get everything cleaned and adjusted engine wise before I plugged "extras" back in. Issue I'm having is the throttle keeps getting loose(cord on the servo comes loose). Not a big deal as all I have to do is retighten the servo knob once or twice an outing, but a little annoying and I want to make sure this would be normal. I verified the linkage and such is hooked up correctly, and the servo knob itself spins easily clock-wise and is a considerably harder to spin counter-clockwise(loosen the cord/throttle). I'm wondering if maybe I need to have it plugged in to keep it from spinning counter clockwise or if it shouldn't spin counterclock wise regardless if its plugged in or not. On another note it seems that even when its tight it introduces a little more slack to the throttle when coming out of neutral/idle.

I was able to find a couple of threads on servos locking up, but nothing on them being loose.