How would i make a rover (rocker bogies system)?

so basically, i was gonna make a space rover. i followed a tutorial (https://www.youtube.com/watch?v=jgOqc-rMwRo&t=93s) but for some reasons, the thing wont move. it said to “and set the Upper Limit to 0.1 to allow for some movement.” i already did but… still doesnt work.

and theres also one other problem i noticed, which is the welding. the welding part wasnt very clear so i wasnt even sure if i did that correctly, plus its the old Roblox Studio which means the icon would be slightky diffrrent