Bird. I dislike seeing posts going unanswered but I have a feeling that unless someone actually has one in their possession, there will be no answers forthcoming, most unlikely,.
It might help- if you posted some pictures of the thing, with details, size,current weight, motor/prop/battery combination etc, and also exactly the issues you are having.
I have just had a v quick surf and found the boat easily enough, it was a kit..no instructions?? anyone else have instructions??
Lastly, are the foils adjustable other than set at the angle you choose when building it
Ashley