My Walden has a Fishman Aero+ (which I think is just an OEM version of the Presys+) system... and the high E string is quieter than the others. I know this could be a "pressure issue" (bottom of saddle not completely flat when it was sanded down), but I've also read many here who have said "better to just replace the UST", that way you know it's good."
I contacted Fishman and they want $65 for the UST. But, I see many versions for sale for alot less, they say they are compatible with the Fishman system (I know there has to be an impedance match).... are these OK? Has anyone bought one?
(these can generally be found on ebay)
http://www.ebay.com/itm/Kmise-Z5216-...IAAOSwKytZNW8k