Have my MRV system being done next week. I currently have the HR20 and R15 in my system. I added another HR2X with my order but wasn't thinking when I ordered (now looking back) that I won't be able to MRV the R15 and now I would like to be able to MRV with that unit. So, what I read here on the forums is the R15 needs to be replaced with the R22, correct? If so, what I am reading in the forum is that the R22 works with MRV just like the other H/HR receivers as long as HD is enabled. Does that mean HD enabled on the receiver? I'm confused on that one. Is it how it is connected? A setting? HD on the account (which is obviously on the account with the HR boxes)? Here is what I have: HR20 R15 Here is what I would have next week: HR20 HR2X R15 Here is what I should have to get MRV on all 3 boxes, correct? HR20 HR2X R22 If this is what I need to do, then do I just call up D* and tell them I wasn't thinking clearly (which is common these days with a 1 year old and 3 year old) and I need to replace the R15 so I can have MRV with that box and that I need a R22 added to my order? Is there a charge for that or is that considered an equal swap? Thanks again for all the input in advance!