Where can I reorder the vibrato arm for the '61 Masterbuilt?
Unfortunately, we do not stock the vibrato arm for the '61 Masterbuilt as a spare part. However, Fender vibrato arms are compatible with the '61 Masterbuilt, so using a Fender vibrato is a good alternative.
It's best to get a Fender arm from a local guitar builder, because they can still adjust the bend if it doesn't fit.