Header tube/T Bar

I have the old low hanging headers on my 360.For some reason now never did this until 3 days ago.On the right side there is one tube that's always been very close to my T bar,now as I slow down and almost come to a stop, with the shake of the cam that tube is hitting the bar,drove me nuts trying to find the noise.So I think I found it just for gigglessss I wedge a screw driver between the tube and the T bar,went on several stops and no noise now.My rubber mounts are only 3 years old.Any clues as to what has shifted,also outher than going to a shop and heating up the tube and put a bend in the tube what can I do at home.In my pic you will see were the handle moved and melted on the tube. Thanksssss.