Took delivery on my 09 MKX six weeks ago. Everything is great except constant signal loss (of a few seconds, sometimes more) on some Sirius satellite channels, specifically 77 (Broadway) and 79 (Classical Pops). Dealer says it's Sirius; Sirius says it must be the equipment. The dealer has had it back and checked it out twice. The last time (last week) the dealer had technical assistance from FoMoCo; one of their strategies was to test the Sirius on two other new Lincoln vehicles on the lot - same signal loss on the same channels. Anyone experiencing something similar?