Why won't the model move?

So, I want a model to move using a PrimaryPart. Of course, it cannot move without being unanchored, but then I would have to weld it. Which is what I did. I welded PlaneKit to Part. Now for some reason, the model doesn’t move. Here is an explorer image:
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Did you not consider the 87 welds could be a problem? If you have something like a BodyForce, BodyVelocity, BodyGyro ETC, anchored’ness wouldn’t be a problem.

What is the Mass of the Model?
If you have a bunch of Parts in the Model make them all Massless and if it needs Mass to be more stable then just make the PrimaryPart have Mass.

Okay then. I will see what works.

Wait do you mean I can have it anchored?

No, I’m saying the Welds might be stopping the model from moving.

Why would the welds be causing it though?