G'day Matt the contact details for Greg Goodall at Goodall sails are ahpc@ahpc.com.au
52 Craig St Bendigo Vic 3539
phone 03 54436910
I've always found him helpful and approachable so give him a go if you get no luck with e-mail let me know and I'll call him for you.
Some of the travellers have a little hole on top and a little hole on the side and are designed to put the bearings in a big syringe and push one in the top and that pushes one out the side to make the replacement easier.
regards