hello, i have a bad valve on my 05 4.2 and have started the head removal.i do have the cam holer tool but not the wedge tool,so i went to the local dealer and they said they dont sell them,ok ---so i copied the tool on a piece of paper and had one made.the problem im having is it will not push the chain,tensioner in.iv tried tapping it with a hammer but am afraid of busting something because im not doing something else right or the tensioner is stuck out.any ideas as to what is going on,the book doesnt say you have to really smack it.and i cant see it budge when i try to pry it in.i did see where another poster had the wedge tool come out during installation and he fixed it by using a small wire to lift a catch in the tensioner and used the wedge to get it back without dropping the oil pan but for the life of me i dont see how,and a pm yielded nothing,any suggestions are very welcome,thanks in advance