Is there a gap because of the cornies inside? You could try filling the gap with some insulation or something.
How's your CCNA going? I have my CCNP (and probably never going any further than that).
[Carboy #1] "Oud Renard Rood" Flanders Red
[Carboy #2] Whitewood 12° Abt
[Carboy #3] Opus Mosaic Brown
[On Tap (Keg)]
(L) Shut De Do (Belgian Golden Strong / Tripel)
(on deck) Pineapple Wine
(on deck) Russian Imperial Stout (1 year aged)