For information/comment.
I have (hopefully) completed editing the above in the database.
Originally named after the designer Jerry Bakeng with the model name Duce, the rights were purchased by the Bakeng Deuce Airplane Factory in 1999 and rather than be renamed Bakeng Deuce Duce, it has continued to be known as Bakeng with the model name changing to Deuce, thus Bakeng Deuce.
Thus I have used Bakeng Duce to 1999 and Bakeng Deuce thereafter.
A small number are listed as single seaters. I assume this to be correct and practical as the seating is in tandem formation. Unfortunately none of the profiles for these few includes a photo to confirm.
Malcolm.