I just upgraded my Premiere to a Roamio, which is in an open air rack. Previously, I had my PS3 Slim on top of the Premiere. I had read that stacking things on top of the Premiere was fine, and I never had any heat problems. The new Roamio is a different shape, slightly rounded on top, making the PS3 less steady. I'm concerned that the new shape means I shouldn't be putting anything on top of it, but can't really find anything anywhere saying if I should or not. Rearranging the PS3 or Roamio to a different spot on the rack would be cumbersome with the cabling, but preferable to causing either the PS3 or Roamio to overheat. Should I go through the hassle, or is it fine to keep my PS3 on top of the Roamio?