Hi, First time on site. I had to replace a head on one of my 350s (have a 2002 SeaRay 290 Sunsport with twin 350 mag mpi mercruisers-300 hp) while removing the exchaust I came against the dipstick head (yellow rubber) and knocked it off. The stick slid down further into the tube and was wondering if anyone has had to replace this tube and what steps you have to go through to accomplish this? Thanks any help appreciated.