Hi Peter,
I personally never came across any lock-up machines, so consequently never saw any go back for this mod you talk of. But if it was a resistor then $500 is a bit steep!

I don't understand your second point. I have never said the EW65 made them sound identical, it didn't. It gave you all the better voices and styles a lot cheaper than swapping boards. Many, including myself, changed boards because for us the total difference was worth it. Others had a further option open to them, if they chose to take it, with the upgrade card, that's all.

I think Richard has got the perfect solution playing the Wedding March, no bride could object to that serenade on the big day.