On my new very used Sinar F1 the corners of the GG are snipped off. I blame this for me not noticing that I had exceeded the image circle of my 135 lens when using front rise. This vignette ruined a couple of shots as, for once I was able to fill the frame top to bottom on these two shots. IMO they would have been considered keepers. because of this I am planning on getting a Satin Snow gg w/o the corners snipped. My question is this. Will I be able to transfer the marks on the sinar GG onto the satinsnow GG with a sharpie or something? These marks have become invaluable as I learn to use the cool sinar focusing calculator and movement thingy.