Martin Logan Odyssey transducer problem.

I have had these speakers for about 15 years and have enjoyed every minute with them....until now. I know I've had some hearing loss in my left ear and thought that this was causing me to have to balance volume in favor of the left speaker. In fact, what happened was that the left speaker's ability to accommodate higher frequencies is compromised giving the impression that the stage had moved to the right. I just added a new amplifier to the setup which is very good in high frequency detail which made the issue more noticeable. Anyway, new transducers are a bit expensive so I'm trying to make sure that this is really the problem before ordering new ones. There is always the possibility that the X-over board is bad, I suppose, and I did replace this board 5-10 years ago. I hope this is the problem but suspect that it's not. I'm getting ready to remove and switch the transducer panels in an attempt to verify what I believe to be the issue but would welcome any suggestions or a cheap set of panels.