How am I supposed to fix the problem of pins falling over?

The pins keep falling over and I’m not sure how to fix it. I thought of making the Huey claw spin, but that won’t really fix anything. Does anyone have any good ideas?

What do you mean by falling over? Also, a picture of the problem would help.

I think @Autistic_Scorpio means that when the Huey makes stacks, the pins don’t align and topple over? This could be for the cactus too.

You could add a button that makes the robot drive slower when held, to help with more precise alignment.