How do you stop a part from sliding the opposite way on a sloped Conveyor belt

I have tired everything I can think of but every time the part slides the opposite direction or just gets stuck. Is there any way that I can fix this cause am out of ideas.

I got it to sort of work. But it only works half the time. Sometimes it get stuck other times it gets passed it. If anyone knows anything plz let me know because I cant move on in my game until i figure out how to make this work.


Have you tried increasing the friction on the conveyor belt?

Yes, I also messed around with the density.

Its not that steep of a slope either.