Grrr. What do I need to say and/or do to convince my local Rite Aide/Walgreens/Wal-Mart or even my local pro lab that cross-processing E6 film in C41 chemicals won't ruin their machine or their chemicals or the film? As soon as I find one place that'll do it, they'll cross-process for me once and then, without any good explanation other than "Oh, it'll hurt our machines," will never do it again. I plead, I bargain, I give factual information, but it's all in vain. I know it's really just a CYA deal so they don't have to worry about accidentally processing negatives instead of slides, but c'mon! I can mail my film to a lab in Portland that knows cross-processing is harmless to their machines, but I really hate to wait that long. And I'm running out of places locally that will believe me. Anyone else have this same trouble?