It caused one to blow up as i was putting powder into a casing (which sadly was missing the primer >_< ) .
Maybe I'm miss reading this but, you dont have your powder drop in station 2 do you? The loadmaster is designed to leave that station empty while priming is going on. Please dont do that.
There are a few things you can do to help the priming function better. Take the primer slider apart and make sure there are no burrs in the ramp anywhere. Also make sure the press is as solid as possible. Since everything takes place on the downstroke I have found putting a spreader bar under my press as close to the ram as possible takes out virtually all the movement while reloading.
The most important thing you can do to ensure perfect priming everytime is slow the handle down on the downstroke. I bought a used loadmaster press just to see if I could make it run, and had pretty good luck with it. I did develop the priming problems to the point of priming off press for a bit, but one day I decided if I couldnt make it prime while reloading it was going to leave my reloading room. I put my safety glasses on, stood above the press and worked the handle with my left hand so I could watch what was going on and see what needed to be adjusted. As the shell plate came up slowly I watched the wedge bar ease a primer into the cup, and as it reached the top of the stroke the priming lever pushed the primer in perfectly. I did this again, slowly, watching the process and saying to myself what can I possibly adjust and then I had my "A HA" moment. Work the press handle slow and smooth and have trouble free priming.
The problems occur when you start going too fast. It will prime much of the time, but the wedge bar that pushes the primer feed into the primer cup has a pretty steep angle and the faster you go the more the primer gets slung instead of gently pushed, and it results in primers getting slung out of the cup and going down the ram with the rest of the spent primers, or getting into the cup crooked and resulting in a crushed sideways primer.
Its actually pretty easy to induce primer failure by working the handle too fast, you can watch it happen from above the press. Slow that handle down and it will prime perfectly.