im lost i have a 08 3500 6.7 my evaporater was bad and Freon came out the drain tube. I bought a new one spent a good 5 hours taking the dash out etc put a new one in followed a YouTube video and don’t know what I could have done wrong. Got it all back together went to work put a machine on it to fill with Freon and as soon as it enters to comes through the vents smokes the inside out can someone plz help me guide me what to trouble shoot or what could be wrong