I have been using CatSailor for parts- got new set of shrouds-and trampoline- they are just right- and my local Layline for some other small parts- they will let me come by to pickup. Good luck with the mast search- I only have 1 and need to keep it- the previous owner says the Prindle will really be fastest when the wind is up- > 15mph- he had H 14 and Supercat 19 too. I haven't sailed it a whole lot but if you have Prindle questions I'll try to answer.
John R.