To anyone familiar with tape units, here's my problem: I was playing with my EP-3 and noticed that the echo's were decreasing in volume and sounded slightly distorted. This was happening intermittently and it didn't bother me too much up until the point where it is now happening all the time. The dry signal comes through, but the repeats are extremely faint and distorted sounding. It was working completely fine minutes before this so what could have caused this to happen so suddenly? Any tips to give me before I spend a couple hundred bucks to send this out and get fixed?