The Radio Information Board

I did notice that 3 of the case screws are missing like someone had opened it. Is this an easy adjustment or should I not attempt it? Are there instructions somewhere? Sorry to have to ask for that but I have scoured the googles and can't find anything about it.

I have a couple of TK-730's that were given to me. So far I have programmed one of them and it seems to have problems with distance and hitting our repeaters. It seems like it is set to 5 watts as it will only transmit at about the same range that my HT1250 handheld will. When I get outside of the d...