Yes the 19/64" stopper will be too loose. However, if you slide either a
5mm ID or 6mm ID 0ring over the shaft behind the stopper it will hold the
it snug against the base of the broadhead. There will be enough resistance
with the stopper pushing the 0ring up the shaft. I shoot MFX Classic 340's
and this works well.
Answered on 3/25/2013 by Anonymous