How do I get my jet to remain "solid"

So I’ve created a jet using many props (56 to be precise) however every time it’s unfrozen it just spazzes out. I’m trying to make it fly so this is obviously unacceptable.

I’ve tried many tactics that I’ve learnt over the times such as:

  1. Have one “Master Prop” which every other prop has a single weld onto, have every prop other than the master prop to have low weight, and have the master prop be heavy.
  2. Do the same as above but parent everything to the master prop

However I’ve only managed to reduce the spazzing, not remove it.

Does anybody have any tips/tricks to help me get this thing to a state at which I can get it flying?

Nocolide everything