Rick, I really like your progress, this will be a beautiful Dr.I!
I need to look into one of those "Wet Pallets" for sure!
You can make one yourself easily!
Take a plastic CD box, the clear cover.
Put in one or two layers of kitchen roll paper cut to size.
Put on top a layer of baking paper (also available in white)
You can slide the papers under the 4 halfround tabs, or fix it around with paper clips.
If you now made the lower kitchen paper wet, you have your wet pallet - cheap, easy and working.
I do not invented it, I read about it somewhere.
Cheers,
Frank