Yes, I'm familiar with the UV effects on the West System epoxies...I have done lots of work on fiberglass boats over the years. I will be using polyU on at least the carbon lugs. I'll take a look at the Varnish Oil. I ride in lots of rain herei n Vancouver....any concerns for this stuff?

The only location I want to fill in is the underside of the BB...there is a void formed by the overlaps of carbon that just looks ugly...but the setup is pretty strong there. The fill it will just be fore cosmetics.