Yikes. It definitely sounds like you are using way too much oil.
Stand oil is more concentrated than linseed oil so I’m unclear why you would use that as a base.
This is the opposite of the fat over lean principle where you use a smaller oil to pigment ratio for your first layers.
I would definitely discontinued this practice.
You can try removing the drips with gamsol and then touching it up.
I don’t think varnish is going to help, sorry.