Ernie Ball volume pedal buffer and taper mods.
Mod on your pedal is $75 or we sell them new at buyanalogman.com with the mods.
http://www.analogman.com/modform.htm
http://www.buyanalogman.com/Ernie_Ball_VP_JR_Active_Volume_Pedal_6181_p/ebvpjr6181.htm