look on the bottom of this page linked earlier
http://www.1954advance-design.com/W...l/1948-63%20rocker-arm%20oil%20tube.html
it shows the sealed tube like you have



here is a good way to check the oil passages from big tonkas web site

https://picasaweb.google.com/113636046886857960240/New235?noredirect=1#5748527603210399186