I just installed the noszle nitrous kit and I have a few questions. First, I noticed a small leak on the out side of the nitrous solenoid. Then, the distribution block iced over and some of the individual nitrous lines frosted as well. Does this mean that somehow nitrous got into the distribution block (and in the cylinders) even though the system was not armed. Or, is it common for the lines to frost if there is an external leak, like the one from the solenoid? Any help would be greatly appreciated. Thanks.