Not sure about swapping them as I never have. But I will tell you that over time it will loosen up. Plus it helps the radio center correctly. Lightweight springs can lead to an issue of the radio “bouncing” around center or not always returning to the same position. My personal 4px loosened up some around the 3-5hr mark of use. I then tightened it back up to my preference and it has stayed about where I had for years now.