You don’t say whether this engine is new in the box or not but these were issued over 9 years ago (late 2011), weren’t they? It might well have been opened/had some handling in the period of time since then, and depending on the care taken in handling it and storage conditions, I can see that there might be some blemishes in the clear coat. BTW, I don’t think that there were a lot of these pilot versions made - I have seen a couple of references to a total of 50 of the S3.
I’ll defer to the painting experts about sanding the imperfections out and what to spray over them but I’d be less daunted about that than trying to repaint color finishes.
The smoke performance is not surprising if the smoke unit started out bone dry. 20 drops won’t be enough whatever the manual says; I’d put 30 plus in to get the wicking more saturated (doing it slowly, say 15 drops 10 minutes apart to let it soak in). I think that this has one of the early Legacy dual chamber smoke units where both chambers fill from the main stack and you need to allow time for the fluid to migrate from one to the other. I think that this is the diagram showing the units components:
I did not find Legacy smoke units of this vintage to be great performers without absolutely saturating the wicking, which sometimes can only be done by taking the boiler shell off to get at the smoke unit itself.
