They are tough material and will likely be fine. Do not turn that bolt unless the front tires are off the ground. Do not heat them!
Yes clean and lube them. They are a bit tricky to get to so don’t give up too easily. Get a wire brush up in there first, then Brake cleaner, then when dry lube them and let them sit for a day. Before turning them. Jack up the front of the car first.
Do not heat them!
Big M will have plenty of these for sale.
This way is not simpler, more parts and hard to assemble. The new way is much more simple.
