Rule is simple, in every 10% cdi, u must combine it wid its counterpart 7% amp.. so dat means if u hav 100% total cdi, u must hav a total of 70% amp in order to utilize all of ur total CDI.. But you have to consider diz.. that CRI is useless if you have low MAX CRI, MAX CRI is useless w/out full CRI.. CDI is useless w/out CRI, CRI is useless w/out CDI.. CDI is useless w/out AMP, and AMP is being utilized depending on your Base Attack..