Hi all, I'm hunting for an Estes Helicat 18mm motor retainer. It appears to be a two-tab locking cap not a screw on. I'm not sure where the original is. I built the kit many moons ago and several moves ago. I've looked at quite a few of the vendor sites with no luck. It doesn't matter to me if it is 3D printed or an original from an unused or broken rocket. My only other option is to modify the existing motor retention fin can or get a NIB kit from somewhere. Thanks in advance!