Sikkens 2 part. Actually covers flaws and blems in the color coat. Had someone bring me their pre-sprayed color coat done, with issues but was easily covered over smooth. Build it up with light coats, typically wait 30-45 min between coats, of which each coat gets a very light scuff of 320. Don't compare this to heavily sanding and gumming. Also, the product is very forgiving when you first see flashing on the complicated tubing. Best described as the flashing disappears or melts in. That's it. Cures fast.

Another that builds depth and with robust quality is from Gemini (better known for coating wood products). Like above, the two part urethane cures really fast, can actually lightly touch by hand in 15 minutes. Wicked catylist to not mess around with and certainly suggest using better breathing apparatus.