unstable celluar

[ant man]

hello i have a go fly a kite paitrotic facet it has a double wishbone looking bridle that no matter what i do it wobbles all ove the place in flight the upper points are on the left and right and conect down into one pigtail that ties on the line its a weird setup but its the only facet out of the 4 i have that im haveing problems with. ive trobled shooted my other facets before with a few minor adjustments but for some reason this one is tough any help would be great thank you!!!!!!!!!!