I guess ill go first with a post...
Heres a few part numbers from "annapolis performance sailing" to keep my 2005 on the water for the entire season
I always replace these at the start of every season.
Mast Head Spin sheave
Traveler car pin and Shackle.
these are 2 items that i keep in the tool box
Sheave on Vang arm
Fatso Jr. Universal Replacement Kit (these are never in stock when you break one)