White weighs more than clear when it dries.

I used Aerogloss butyrate for years and it didn't seem to cause any warping

But real Randolph butyrate clear from Randolph themselves or from the airport will literally crunch a lite framed plane. You have to put three or four drops of castor oil into 4 oz of dope to keep the shrinkage down.

The Sig and Brodak never seemed to cause any trouble