Yaesu is pretty notorious for that. I know of 3 people that have (or had) the 2980 and the results were all the same. I guess there's a heat shrink paste shortage. "rolls eyes". Good you got yours going patched up and is still going for you. I have run a 2980 but never owned one, we used one for an event we were doing some time back as more of a net control point and it worked well. I thought personally the radio received pretty well, which I'd expect from a mono band radio.
I do not know of anyone that has the 3185 to even ask about it. Should I find anyone that actually has one I'll see what they think. I know personally when I ask for a recommendation on something, I'm smart enough to have already done the research, and am looking for an honest hands on review from someone that has that particular device. I can only "assume" you're looking for the same.