I picked up an 09 fender p bass, I checked and according to various sources I should be able to load the strings at the bridge and not have to used the through body anchor points. However I am unable to use the bridge anchor points because when ever I remove the strings from the bass, the through body anchor shafts come loose and fall out, basically they are just being held in place by the strings. Has anyone else had this issue on an 08 p bass or newer? Is this common with these? Do I need to get to my guitar tech and have them glued in place? any help appreciated.