I do give you a vote of confidence. I give anyone trying a vote of confidence. If I had an old carb type truck I think I would try it but with the more modern engines with emission controls, fuel injection and computer control it becomes harder. I just was stating that I think I will try something simplier like a small 6hp electric start engine that I purchased a while back just for this type of experimenting. Once I get it working or figured out then I will move on but for now a bench mounted engine is easy to work on and to modify. And electric start is even better as it keeps my arm intact

A weed barrier. It is a fine mess black cloth type material that is in the garden department of most discount or landscaping stores. Its purpose is to allow water to seep by while keeping plants / vegetation from growing though it. Hence the name weed barrier. I was thinking a couple layers of this may keep the chemical solutions from mixing. Worth a try anyway.
Happy experimenting.