Did you use the laquer from reranch or did you buy it somewhere else. All the different companies have differing amounts of thinner and solids. If reranch says that two cans is enough when using their product, then that should be fine. But if you are using someone elses you may need a little more or a lot more depending on the brand. It also depends how heavy you lay your coats. Like previously said, 9 coats from 1-1/2 cans is laying it on pretty thin. How many passes are you making per coat? What grit are you sanding with and how often are you sanding? How hard are you sanding? Is it a level sanding or just a very light scuff sanding?
Yah I am using there laquer and am doing as they sugestesed using 3 passes for one coat and I am sanding with 2000 grit sandpaper I don't know how I can be burning through.