If the agents have the following arrangement:
P H H H
H H H H
P H H H
and both are firing to the right then, assuming the top one fires first it should go like
P R H H
R H H H
P H H H
and then
P R H H
R R H H
P R H H
whereas currently it would just end as
P R H H
R H H H
P R H H
If the agents have the following arrangement: P H H H H H H H P H H H and both are firing to the right then, assuming the top one fires first it should go like P R H H R H H H P H H H and then P R H H R R H H P R H H whereas currently it would just end as P R H H R H H H P R H H