Purchased this today from a guy locally who said the radio was stock. Didn't take too long to figure out that it wasn't. I'm thinking it has had a channel mod done but I'm not sure what else. R131 looks to be intact so I believe the mod limiter is still there. I turned the am down a fuzz because when I got it, it was dk around 5.5-6 watts and when speaking into the microphone the ammeter on my power supply would swing backwards just slightly. I have it adjusted to around 3.5 watt dk now and swings slightly forward. I have not been able to get a ssb transmission quality report because of poor conditions locally, but did manage to hear some skip and it seems to receive okay. I'm posting some pictures to see if you guys can identify the modifications made and possibly help me return the radio to stock, other than the channel mod which I don't mind.