I had a Goodrich volume pedal. A nicer model - it took 4 months of regular use to develop a scratchy pot... Sold it and picked up an Ernie Ball VP Jr. for $45 used.
I sent it to T1M for modding - installed split buffer to take the tuner out of my chain and maintain signal, and it sounds incredible! All for less than $100.
I highly recommend that route. Goodrich has too many horror stories to believe the success stories, IMO.
I would try the Dunlop Pot in the Goodrich before giving up on it. Been using it for quite a while with out any problems. Check it out here.