Hi folks.I recently bought a TC Electronics Flashback delay.I love the pedal but im confused about the number of batteries iv had to use.The one that comes with it literally lasted a few minutes then the pedal died.Im on my 7th battery so far and they are not the cheap variety.Is this a common problem with delay pedals?My Tech 21 Red Ripper lasts a lot longer.After reading about power supplies iv ordered the Diago Powerstation so hopefully the battery thing wont be a problem for much longer.Just curious to hear some feedback.Cheers.