So I've got an early 90's Martin DC-1E with Fishman Electronics, that I've had forever. It's always been a great guitar and has never given me any issues until recently. In the past six months the pickup has decided to barely register the D and G strings. Everything else comes out bright and clear except for those two strings. I've tried adjusting the EQ all over the place, new strings, batteries and different cords all with no luck. I'm currently living in South Korea and did not bring my amp with me, so unfortunately the only chance I have had to really figure out what is going on is before gigs. Either way I've had to just work around it. My question is, is there anything I can do to fix this on my own? Like I said I am currently living in South Korea so my options on local shops are pretty limited to say the least. Also if I have to order another pickup it's going to cost me an additional $75 just to get the thing shipped to me here. Thanks in advance for any help anybody might have. I might be overlooking something really simple, it's just been incredibly frustrating to not be able to walk into the shop and talk to my normal tech.