Back to this one ...
I've stripped the varnish off most of the rails and cap. I didn't want to work upside down so I removed the rails to get at the undersides. The varnish there was, no surprise, in almost perfect condition.
1) Underneath the stanchions was some bedding goop, reddish brown in color and still flexible, not hard and brittle, for the most part. What is that and what should I be using when I reinstall the stanchions?
2) My teak is now multicolored. Some bleached out to a very light color. Some a nice rich, brown color. Some black spots of rot? fungus? dirt? Oh, and yes, a few scorched spots where I got carried away with the heat gun. What should I be doing to get a more uniform color before refinishing?
For refinishing I'm currently leaning towards Cetol, a few coats of natural followed by clear.