Is it O.K. to mass load a X250 Pass Amp?


I was just wondering if anybody had experience regarding mass loading an X250 amp(Pass). I've mass loaded the rest of my components with nice results and then decided to put some weight on the amp but the weights cover some of the ventilation. Is this very bad? Does anybody have experience with mass loading equipment including amps with ventilation slots?
What about speakers? I've had mixed results using Totem Beaks on my speakers so I've decided not to mass load the speakers for now.
mitchb
if i were on a different board i would ignore this or flame you, in this instance I would heed Murlman's advice
It appears everyone is against the idea of mass loading my X250 but my amp is not getting any hotter by doing it the way I'm doing it. The amp appears to be luke warm to the touch but not in any way hot.Is it still damaging if there is no heat difference? It does sound really good this way.
After a while I noticed that my system soundes more listenable without mass loading the amp.Taking off the weight on the amp lightened up the sound but in a good way.Mass loaded the sound was too thick, too full. I do like the effects of the mass loading of my CDP and Preamp however. Thanks for all your advice.
Mitch