I stupidly crossthreaded a replacement cartridge into my old touring frame. I noticed this only after I had inserted it all the way in and the flange was not flush with the BB. I backed it out and installed it correctly so it now fits, nicely snug and flush, and all *appears* well. But since it also *appears* that most cartridges I've seen seem to place nearly all of their stress on those right-side threads (the left-side plug is often made of plastic) I'm concerned that I may be inviting future stranding on some forgotten road in the middle of BFE should that right-side BB threading fail completely.
So, should I consider an old cup-and-cone spindle since those *appear* to distribute stress more evenly? Loctite? Are there cartridges that distribute stress to both sides? Should I even be concerned?