The Bingo 20 was published in a magazine, but to my knowledge it was never kitted.
The plan looks good but upon closer scrutiny it has a shocking number of inconsistencies and inaccurate dimensions. Don’t be alarmed if you print the plan and the parts all look funny and don’t match the drawings. The plan is terrible, but I’ve designed the parts so they will fit together properly.
If you want the plan but you can’t find it, let me know and I’ll help you out.