Definitely insulate the collar and definitely add a fan, as others mentioned that'll help. The fan in particular will help keep the lines cooler and reduce foamy first pours. I'd recommend an Eva dry dehumidifier over the damp rid, they're nice little units and you can regenerate them overnight. Put it on its side right under the fan for the best results, mine's in a hot humid garage and I have no visible condensation. Also try not to open the lid unless you have to, that's the real killer.