why do you need to take it off then put it back on?

..or did you already do it, and now you're just making sure everythings okay?

in theory, when you put the spring back, it should ideally be exactly the same, and be in the exact same place.

when you actually do it, the spring may not pull exactly like it did the first time, though..
so it should be pretty close, but it's worth setting it up again just to be safe, and make sure it's spot on