I have a circa 1985 purecussion NE series drum set with a 10,12,14,16 toms and a 12" snare. All of the drums have the R.I.M.S. mounts on them. I have transducers to use as triggers, but these drums do not have standard rims to mount the trigger guards to. Does anybody know of any trigger guard that mounts to the rim isolation mount or do I have to make my own custom trigger gaurd?