Im far from a pro. My first install I did for myself, and I went demon and rgh2. No problems on the demon. RGH is another story.
Same with rjtag. it seems its just a troublesome jasper, because same rjtag i put in a falcon and was hitting Perfecto within 2 hours of install.
Did you use chip-quik to remove the demon? Im putting off extracting mine to the new falcon in the meantime.