4a62864e__Island_Checklist___Mad_Yakker__Hobie_Forum_Links
[Status] Fixable [Area] Mast [Issue] Collar bearings falling out [Fix] Disassemble mast collar, sand down any burs or humps. Use section of pool noodle if persistent. See links for full info. [Hobie Forum Links] 
Mast Collar Mast Base Screws (and collar bearings)
Hobie Island Checklist | Mad Yakker
Hobie Forum Links