After a fight with my transmission for shuddering on me I went to a racing transmission specialist. He wanted to try adding Lucas trans fluid conditioner to my car. Well this over filled my trans by 1/2 qt. On my last mountain run I was smoking on the way home. I found that the fluid was being forced up the tube past the dipstick seal that was hard and half missing. I found a rubber wire grommet that replaced the old seal near perfectly. My question is how important is a good seal at the dipstick?? In other words could this have been causing problems for me???