just left the flying field,and a flyer was flying one--(4-60)---he loves it---built it in his basement last winter,beautiful plane...he put thin silver tape around the canopy edge ,and then inserted small nails -brads-spaced about quarter inch apart---looks like rivets---sharp !!!might build on this winter ...his has -OS-91 FS-on it---ya just godddddda love the sound of a four stroke---happy flying-----amelia