If you're running 30# injectors with a 19# mass air meter, your fuel delivery is all gefugled. Your will be running rich and the effects will vary depending on the load. You need to match up your meter with the injectors and maybe even chip it or get a Tweecer, PMS or similar. Your fuel pressure on a Fox should be be set at 39 with the vacuum line off (stock). If you're having to back it off that far to get it to run, it's no wonder things are wacko.