in my EZ3 drive line somewhere. Neither I or the LBS guys can find it. It sounds like a tap, tap, tap, but only when I'm climbing a hill, in the lower gears.... when I'm in #1 gear on the left hand, and #2, 3, and 4 on the right hand gears. The noise gets louder as I go up in numbers. Sometimes it's so loud, it embarrasses me when people look over to see what all the clatter is about. I'm just wondering if any other EZ3 owners have had this same problem....my trike has just 520 miles on it.