Denis, sorry I cannot answer your question directly. However, I had the MD-102 and I strongly urge you to get the S2 roof top antenna if you want to start to get the most out of that incredible tuner! Good luck.
I'd call them. If your signal strength is that strong it should be coming as stereo. Sounds like something isn't working properly. The above advice regarding getting an outdoor yagi is a good one. My old Kenwood (modded) sounds almost like cd's. I've noticed most people don't even realize a tuner can sound this good. Of course you need a high quality broadcast. Only two stations here are that good.
Denis I am very envious of your md108 for I ownly have a ETUDE. I have lusted over that peice for a long time. But what I will say ditch the indoor and go outdoor yagi, you will be truly amazed what you will be able to pull in. I can pull in stations from 100 miles away with a pretty impresive signal. I found radio shack gave me the biggest bang for the buck on a yagi, put in a sepperate cable and ONLY run it to the tuner. I found a rotor was not nessesary in my application . David
Glad to hear they're taking care of it for you. I just worked on an FT-101A that was approximately 3-4 years old (which has the same guts as the current MD-100), and the circuit board was delaminating, with a few traces oxidized and falling off the board. Yikes!
Beyond that, the basic engineering and design was essentially a mid rank car radio. Fortunately, with some careful parts replacement it can be improved over 500% and often more in terms of measurable distortion performance without adversely affecting the tuner in any way. Neat. This tends to occur across the line, based upon what Magnum told me about the design of the other tuners, although the TOTL 108 might be a different IF and decoder design. I didn't ask them about that one.
The roof mount Yagi is definitely the way for pulling stations, and with a few grand into the tuner, you owe it to yourself!
My old MD-102 was probably the first one they saw exhibiting the exact same symptoms ... despite great signal strength, stereo was tough to get. I e-mailed Larry Zuroowski, MD's President, shipped back the tuner (at his expense) and received a brand new unit with the updated circuit board. All is now well in FM heaven. MD has GREAT service.