I bought a bf cyclone off the classies here. It was drilled to 5/64 by the former owner.It seems too airy to me.I use a slightly larger than stock air hole in my Rm2's I think i used a #57drill bit and they seem just right to me.Is there anywhere I can buy a replacement cap for the Cyclone? I tried several searches to no avail.Any suggestions would be appreciated. Thanks, Dave