No wonder I couldn`t find it, I missed out the `K` in Wilksch and therefore only picked up references on sites that had similarly mis-spelled it. There were quite a lot of them.
Wilksch is developing his engine for use in permit aircraft. When he has it FULLY sorted, then he will certify it. That way we do not get an unimproveable engine which isn`t quite right. Had a talk from them at our PFA Strut last year.
MikeW.