i second kane..

In Turbulence mk1, we used to have high flow pipes going into the buffers from the regulator. The ram used to be icey at the end of a fight. But it never leaked co2 (until the reg blew) Replace what pipe you have there with some small stuff (6mm od pipe) and it should help keep everything abit warmer. including your buffer tanks. When you draw gas quickly, things WILL get cold, no matter what. The slower the flow, the warmer things will stay. The only part of your system that should be high flow is inbetween the buffer, the valve, and the ram.