Made a Boll Aero engine recently and just finished refurbishing a couple of AM 25 diesels. Was looking to make another diesel ( not one of Mr Wilson's brilliant pieces). Boll Aero plans sourced thru the late Ron Chernich's website where they'd often refer to a members only plans book. I'm presuming with his passing that the book is no longer available, I'm also presuming there may be an uncomplicated engine that I could attempt in there. Anyone know where I might be able to get a copy of the book? Cheers GW