I have an Adams Endurance Field Frame for a vibraphone and the high capacity spring that allows the pedal to function has broken due to wear of the medal. I have been searching around but cannot find a site that sells replacement parts for these frames, and more importantly, the spring. I was curious on where these parts are sold or what a good alternative would be for the spring. I have tried another spring not made by Adams but it was not powerful enough and does not allow the pedal to come all the way back up.
The spring works by pulling the pedal back up rather then pushing the mute bar into the keys so it needs to be that type of spring.