wanting to buy a galaxy 93t

I thinks its about to kick the can and plan to pull it out here in the next couple days. I recieves as good as it always did but I am now having problems talking. It seems like its only deadkeying. I switched mics thinking that was the easy fix but it didn't help. Its doing this 75% of the time now. I am dying to open it up and see what it looks like inside. I have never done anything to a radio but may do some expiernenting with this one. It was given to me 2 years ago. I don't know if anything has been done to it. Maybe a tune at most. When it does talk the other drivers say it loud a clean but it doenst have talkback and I don't trust talkback any how. I think your radio sounds different over the air then through your talkback. Because what I think sounds nice and clean some say its not. I have a power/swr meter will it allow me to open it up and turn some screws and show me any improvement or deprovement lol. I think the RK56 is the best sounding mic. It may reduce power but they say it talks like a powermic. IDK but I do like the way it sounds. I also use a skythumper 56 that sounds louder and more powerful but it also pics up just a tad more background noise. I was shocked just know I was getting out that far with the little 25. I figured maybe I was getting out 4 or 5 miles topps. For what it is I like the little radio. It was free and it sounds clean on air. They say it sounds better then my old stryker and my old but mewer style 29 I had. I just doesnt recieve as good as the stryker did or get out as far.