Hi,
Model builder ,march 91 has a very good history of autogyro,s and a extensive review of Schluter Whopper.they have some tips on engine power and flying which would be good to know.
How long have you had your whopper , I have been looking for one for a while, I know they don't make them anymore.
I have the March 91 model builder , if you have a printer I could e-mail the article to you. the reason you need a printer is - I scanned a page and it was unreadable ,then i printed it and it was then ok.
let me know if you want it, it may take a little while.

Earl.