Hi, I need someone with experience with this pedal. I just got it. It's great and all, but...

When I play a phrase and loop it, and then I try to overdub it with a second longer phrase, the pedal seems to automatically cut the longer phrase down to the length of the first shorter phrase and loop that portion even though I don't stop the second phrase myself. It's frustrating when I want to try and play the first phrase for just a short while and loop it then do my thing, then later on loop a more complex and longer phrase, but I can't seem to do it. Is there any way around this?
yeah pain in the ass i know, just gotta record a longer first track...

EDIT aside from that , awesome pedal
Peavey JSX 120 Half Stack
Mockingbird Evil Edge SE
Mockingbird Special(White)

Set sail to sea but pulled off course by the light of golden treasure --Hetfield, the Unforgiven Pirate

So I dub Thee Unforgiven Three! -How it should have been
Does anyone know if the looping on the dd-20 is the same way? I was thinking of getting it.