were is the sight glass, in relation to the drain tube that goes to the
burner?

btw I also blew out all the lines . was very anal about the exhaust tubes,
I cut alot of cabinet out with a hand saw to make sure I wouldn't force.

I have never lit it on propane, just heard how hard they are to light , so
i wanted to upgrade/clean it first.

I did not let the stove run 5 minutes , just enought to hear gas come out
of it