I hate to advise it(because I hate IR), but why not use an AMX IR receiver in each room? That way, the RTI programming on all the T2s is essentially the same. This would also allow any remote in any room to work in any room you take it into. If one goes dead, just grab one from another room. This fixes your overlap issue and I have the feeling the savings in the RTI programming will offset the additional AMX programming.