It works fine after it's warmed up. But if I drive it in stop and go traffic for too long it doesn't want to shift into 3rd unless I let up on the gas. Then it'll dump fluid from the front of the trans. A constant stream in a straight line. It drives great for 5 miles so I don't drive it far. Transgo shift kit installed. 1-2 gov plug? Will a new man v/b fix this? It's a stock v/b as of now. Stockish 318 in an 82 d150