There is no way to gain an edge at craps playing on the square (barring the occasional promotion). You can use betting systems to reduce variance, but the vigorish will get you if you play long enough. I haven't checked your math, but assuming it is true, 135-1 is not that much of a long shot given many trials. The odds of hitting a Royal Flush at Video Poker is approximately 40,000-1 yet there are royals hit multiple times each day in every major Vegas casino. I would bet a considerable amount that there is at least one being paid off on the Strip at this very moment.
If you want to get an edge gambling (that is, have a positive expected value over the long term) there are a few options. You can become an expert card counter at BJ (but when you get too good the casinos will likely bar you), find one of the positive EV Video Poker games and play perfectly, or become an expert at live poker/race/sports betting. I have no quarrel with the way you play if you find it exciting/satisfying. But if you really want to win in the long term you need to switch games.