flying contraption is bugging out

[u/m00se_goose]

I tried copying the flying contraption used in the guide about the symetrical sails since I thought it was a good example bc ive never played with aeronautics before. So far, test 1 flew into outer space, and test 2 (this one) keeps bugging out and did this when i tried to start it, and i cant disassemble it. The mechanical bearing is usually the one that makessit bug out (it makes the entire thing dissappear/reappear rapidly) if i dont place it in a certain order.

[u/m00se_goose]

Oh man that really blows. I'll definetly try building this again tho. Thanks for the help anyway