Orange squeezer and mayonnaise Debug

[MmmPedals]

Built an OS for a man named Eddy. Eddy only has center positive power supplies. His OS dosent work anymore. not sure why 
Replaced the opamp (used an NE5532) now it works. Now I burnt all Eddy's PS.
So my question is how do i protect myself from eddy because he LOVED his PS When the volume pot (10k at the end of circuit) reaches about 4:00 there is a volume drop from 3:00. It sounds a bit more "squeezed" at that point (I think) but less output than at 3:00. Is this normal or is there something wrong with the circuit? Could it be the result of "Eddy's mishap"?

[brett]

Hi
there shouldn't be a volume drop.  Check everything.  The laws of the universe are, unfortunately, always the same, and when stuff doesn't work there's always a reason.
PS you can tell Eddy that his PS was weak if a faulty pedal stuffed it up.  Tell him to always use protection (electrical). 
cheers

[gregwbush]

I know this topic hasn't been posted in for at least 120 days, etc, etc, bla bla....

but

"Tell him to always use protection (electrical)"

LOL hahahaha, ahhhh