Hidden Yamaha remote control body friction adjustment

[fenderbender]

I have a 2004 model Yam remote control with control mounted on right side bulkhead. The control body is hidden behind bulkhead with only lever exposed. When I remove accessory panel under control and use a mirror I can see two screw adjusters. One top and one bottom on front of control. The throttle is loose and drifts. Which adjuster should I use to increase friction for throttle?
BTW - Anyone know what model control this one might be. I received no documentation with the boat.

Thanks