Two more suggestions:
- Replace the thin topgallant masts (the thinnest, highest section) with wood. The wood part will be less likely to break or get pulled out of alignment by the rigging. (Make sure the grain is straight, or it will warp.)
- Replace the plastic eyebolts with metal ones ( you can get them from Model Expo), at least for any that will be under stress from rigging.
-Bill