I will add that in my area the "green" mineral spirits is labeled as low VOC or environmentally friendly. If you open it and it don't smell really strong it is the wrong one!!!!!
As far as lumber / hardwoods check this place out http://www.bagdadlumber.com/index.html
They are about half way between Louisville and Frankfort.
Just looking at the web site. Looks like they have moved into Shelbyville that is even closer to you.
Here is one.
http://scrollsawworkshop.blogspot.com/2016/12/the-preamble-to-united-states.html
Hope this was the one you were talking about not the ship
The UPS Store has the ability to enlarge patterns. An engineering firm can also do it UPS would be the cheapest. For the size that you have your local Library may be able to do it for you.
If you have a machine shop near you check with them. If the saw has a brass bushing they can make and replace it for you. They can probably get you a bearing if that is what the saw has and you will need to have it pressed in and out anyway.
https://www.amazon.com/Migiwata-Screwdriver-Quick-change-Stright-shank-Micro-production/dp/B072FMW3GP/ref=sr_1_1?keywords=mini+drill+chuck&qid=1575524632&sr=8-1
This is the kind I have.
I know this is not what was asked but, if you could find a nice poplar board that has a lot of blacks and greens I think that would be beautiful left natural. As for what you have now I think a black or dark brown body with pastel green wings would be nice.
https://www.amazon.com/Quantum-Precision-Ultra-Bright-Frameless-Magnifier/dp/B075ZYZP9J/ref=sr_1_2?keywords=Quantum+Precision+Ultra+Lamp.&qid=1574318935&sr=8-2
Think this is it.