Well all together including the tv room the house has 5 points for the PVR, it is the two channel pvrs the old ones i am reffering to.
I have the tv2 (rf out) going up running into a t-piece, one cable from t-piece into the one room then the other cable more or less to the center of the other three rooms, there i got a 3 x way splitter and cable running to each room.
Everything is working fine except for the message on tvs stating tv link overload.
Since you are not using the TVlinks, why not switch them off in the PVR's settings?? This will switch off the voltage on the RF out and it should sort out your issue... Also, change the T-piece to a 10dB 1-way tap.