I purchased a Galaxy Saturn that’s low set point on AM was 5watts and high 10watts. I wanted to make low 2watts and high 8watts. So with radio in AM Power set full counter clockwise I attempted to set VR16 to 2 watts dead key. I got no adjustment from it? So I tried VR13 and was able to set high to 8 watts. I also set VR14 modulation using a scope and it sits just a bit under full clockwise. I also was able to set VR12 SSB using the scope and bird that landed about 3/4 clockwise. Oh ya this is the older 5 digit frequency counter version. Any ideas why I can’t set AM low wattage?