Please start a new thread for ROA loading to allow noobs to get instant access to 'loading for the ROA', rather than the non-ignition issues that are the subject of this thread.
BTW, the nipples that I supply to folks here are EXACT stainless steel replications of the original hex-head ROA nipples, and work perfectly with ALL brands of caps. I have no experience of using any kind of replacement ignition system such as the one that you describe, preferring to shoot the real black or any of the subs.
tac