I still have the problem:
When I play the overdub, Always Always Always delete the previous track, or a part of the previous track.
For example: I play a first track of 10 seconds, if after it I make a overdub of 5 seconds over it, I am listening a loop of 10 seconds, right, But SEPARATELY: the first 5 seconds of the overdub and last 5 seconds of the original loop. Separately. No sound together.
I am playing how you are saying and I have read the manual thousand times... And I cant solve the problem