So, i got this really beaten down, old, cheap-priced MIJ CE2. Apparently, the previous owner didnt know what he had. He sold it for 40 bucks. I only got to try it one time really briefly, then tried to sell it, then tried it again. The LED only works when powered in a daisy-chain (weird?), It doesnt warble, if i turn around the knobs around when the pedal is on i can hear the sound changing, but still no warble. Accidentally i hitted softly the pedal with my foot and it kinda warbled shortly, and again and again. Any ideas on what could it be? Thanks!