Flutterby™! : closed source frustration

I've been using Opera for Linux since beta 1. It's now up to beta 3 and few of the bugs I've reported have been fixed, and there's a crash that only happens occasionally. It'd be great if I could tweak on things, and if I could get a core dump and stack trace of that occasional seg fault, but I can't. I haven't wanted to deal with the horrors that are Mozilla just 'cause I've heard how big and bulky it is. I don't mind paying for Opera, but it'd be really cool if the model existed to let me tweak on the source when I find glitchy things. I guess this is the big quandary of Open Source, just add me in as another whiner.