Adjusting the angle of the swing out rear view side mirrors

[bcoldpro]

I want to adjust the upward angle of my side view mirrors on the swing out arms both left and right. I see a small slotted head at the base of the mirrors. Slot seems awfully shallow and not very wide. I tried using one of my flat head screw drivers but all I seemed to do was to chew up the plastic.
Any hints? Is that the only adjusting screw to be found?

 

[Lv2Roam2]

Mirrors adjust in different ways - some electrically, some w/hand pressure, some w/adjustment screws. And w/2 lense mirrors each lense may adjust differently. Recommend you search the brand you have or call the WBGO Service Center for the instructions.

 

[bcoldpro]

Mirrors adjust in different ways - some electrically, some w/hand pressure, some w/adjustment screws. And w/2 lense mirrors each lense may adjust differently. Recommend you search the brand you have or call the WBGO Service Center for the instructions.

Phone number by chance of the WBGO Servicer Center? My mirrors adjust manually. (If I can figure out how to loosen them at the base)

 

[Lv2Roam2]

WBGO service center 800-537-1885

 

[bcoldpro]

WBGO service center 800-537-1885

Thank you very much

 

[bcoldpro]

I went to Youtube to research my question. There is a little plastic cap at the base of my mirrors with a very small slot. I used a flat head screw driver and applied a little inward pressure while turning counter clockwise. Plastic cap popped right off exposing a T30 (I believe) slotted screw. I loosened the screw a bit
already. Tomorrow I will adjust my side mirrors manually.