Over time the O-rings (tires) on your retaining springs may age, become cracked, or dried. These are easy to replace.
The O-rings that are on the retaining spring may be stretched and new ones may be added.
The center track may also need to be replaced.
Remove the screw in the top of your JFAE4 spindle. The existing track will need to be removed.
Make you remove all adhesive that remains. Then you may add the new center track.
This part order has the following
4-O-rings for your JFAE4.
1-Center track for your JFAE4