Brexitone is hilarious, Pauleo, love it!
@ColorMeBaddFann: Open up a trouble-shooting thread, post the schematic and pics; so long as the orientation of the electro in C5 is correct, and soldered in well, it won't be the problem. Box film won't matter which way it's oriented.
Swap out the electro 1uF for box film anyway, even if it's not the culprit, and let us know if you hear a difference in tone.