I'd have a quick look at a youtube vid on adjusting drum brakes properly if this is news to you, we see lots of drum brakes at work that have been ruined by home mechanics. Problem is if you keep adjusting them on the cable it can wear the shoes unevenly and over extend the wheel cylinders causing the seals to pop (which is what i think has happened if your pedal is going to the floor constantly). Hopefully the lack of adjustment just means you've now got a very small contact patch and the cylinders are having to extend a lot more to get contact. They also won't have decent leverage from the wheel cylinders if the adjuster isn't braced up against them properly. Did you at least have the drums off and clean up the shoe assembly? I would recommend cleaning the lip off the inside of the drums while you have them off, make it a lot easier to remove them next time. Ideally use a die grinder/dremel type thing, but it can be done carefully with a grinder if you're very careful, and i mean careful. I feel as though i should repeat careful, major potential to go wrong if you're not. Careful that is.
Other questions if the drums are all good: Are you absolutely sure the mc didn't go dry? Does the pedal pump up, or does it feel shit permanently? Is the bias valve DEFINITELY free and working as you bounce on the suspension? Are you sure the brake lines didn't get crimped anywhere when you bent them up?
Other questions if the drums are all good: Are you absolutely sure the mc didn't go dry? Does the pedal pump up, or does it feel shit permanently? Is the bias valve DEFINITELY free and working as you bounce on the suspension? Are you sure the brake lines didn't get crimped anywhere when you bent them up?