Update... Just shot 12 baits. No matter where I put the clamps or how lightly I have them on, I get the dents.
I shot the last set with rubber bands on the molds. I know that is really, realy unsafe but I had to experiment. Got no dents but the little arms will not fill unless I press hard and then the molds spread slightly.
I am at the point with these that if I have to manipulate them so much just to get them to shoot properly, the molds are not worth having.
Should be able to vent them better so that a clamp can be applied as with all other mold and shot.
Before asked, I did warm molds, something I am against. Wanted to see if that would help the arms fill with rubber banding. It did not.
Jim