I've searched the various AM21 threads, but didn't see my question answered. I'm about to have an HR34 with 3 C31s installed and I was thinking about getting an AM21 for the HR34. I know the HR34 has five tuners and the AM21 has two OTA tuners. Without the AM21 I know I can record up to five concurrent shows from my local networks from the satellite. If I add the AM21 and let's say I want to record 5 shows at the same time from my local networks will the HR34/AM21 combo know to use the AM21 for two of the shows and the HR34 for the other three? Or will it only record the two shows with the AM21 and not record the others because there are no available OTA tuners remaining. I just want to make sure I'm not creating any limitations by adding an AM21. Thanks.