The company is long gone I'm afraid. They did import some highly detailed ARFs and were well regarded. Their heyday was 20 years ago so your chance of finding a manual is pretty slim unless you find somebody who has an old kit still on the shelf. A search through forum archives might turn up a product review that could be helpful. Failing that you could look through the plans on outerzone to find a similar sized Stearman and use that as a starting place.