Do you see any wear signs on the tube ?? (look down inside the tube with a flashlight and look for wear spots that are thru the anodizing , that would indicate the bushing causing it)
If the bushing is worn where it rubs on the Spring Seat itself , then its not a big issue , if its the part that rubs on the tube , then it should be replaced
If so , then replace the bushing , since you already have it apart , might as well if its that worn , and they are relatively inexpensive ...
Weiser , Idaho