AlexUM - wasn't calling you into question, just suprised..
Mark, Never thought you were
Update on the engine: Student on solo X-C. Went up to 8500ft and leaned out. On the way home forgot about the red knob (checklist?
) and flew a couple of patterns practicing his short-fields before full stop for about 45min. Can this single-time misadjustment be the reason? We need two new pistons and the corresponding valves
Cheers,
Alex