I have a brand new Lee 312-155-2r for use in my sks loads. I've cast about 200 boolits so far, and suddenly started getting massive amounts of flashing on the boolit bases. A quick examination found that the sprue plate screw had come loose. No problem, a quick twist with a Phillips screwdriver (left hand thread) and we're back in business.
Until it happened again. I ended up having to tighten that screw after every other cast, as the wavy washer simply wasn't doing its job. Everything's cooled down now and I have the following laying on my bench:
#36 drill
6-32 set screw
My plan is to simply drill a set screw hole at 90 degrees to the sprue screw and anchor it. Before I start though, I just wanted to see if anyone else had this problem and how they solved it. Suggestions anyone?