@anda1anda2 I'll share these pictures with Roger. My gut tells me this is a combination of where the load is located on the plates and pressure being delivered on the smaller plates. I run my pucks about 1/4" in from the edge of the front plate on my 3x5" plates and don't see this, at least I've never noticed it before? I know there is a little bit of wiggle room in the pillars and linear bearings by design for smooth opening and closing of the plates. For the time being, I agree with @Hackerman move the load closer in on the plates. You should still get gushing out the front, and a slight tilt should encourage the rosin to get off the plates if it takes a bit longer to start the flow.