much obliged, gang!
Another concern involves what seems a likelihood of touching the emulsion--even a bit--as the film is loaded into the Riteway holders (in the dark, of course). Even the slightest contact (thumb/forefinger) at the very corner seems like it might...'mar' the emulsion side of the film.
Q: having noted this concern, just how delicate/sensitive to the touch is the 4x5 emulsion side of the film--considered both before and after exposure? Also, sliding the film into the quite-narrow holder seems risky, i.e., the possibility of...'scraping' (for lack of a better term) the emulsion side on some part of the holder as the film is slid in.