off contact issue

Can you reposition your board. You use off contact on the screen but, your prints won't be consistent. I would say reposition your board or use a smaller screen. You may need to adjust your graphic or deal with a very small inkwell area.

I can reposition the board, but that doesn't matter due to the screen size. It will always over hang because the plattens are square.

I do a little oversize one color printing on the old 4x4 hopkins here--I don't have any problem with taping a shim on the mesh near the outside edge of the platen, but again, not sure how it would affect multicolor reg.

I was having a big problem with fibrillation a little while back on my pre-stretched screens and thought the off contact was to blame as well because i needed my squeegees to be smashing the ink through the screen. Any less pressure and I would miss the edges on parts of my images. It turned out that all I needed to do is add an extra coat to my emulsion when I was coating screens. I ended up bumping up from 2 strokes to 4 strokes on each side of my 110 screens. This allowed more ink to flood in and required much much less squeegee pressure. I would try this first before getting elaborate with shims and rigging, it might be all you need to do.

I think, that it is either I am pushing hard or the off contact tab is not wide enough. I am using a washer the size of a quarter and I have the Newman Roller MZX 23x28" OD w/ Square Bar.