Hi Dek
I too are in a small town in New Zealand and it would be worthwhile removing both rear brake cylinders and having them relined in stainless steel. Unfortunately I am in the South Island travelling with family but had my +8 slave cylinder relined by a firm in Christchurch from Tauranga I received it back in 3 days and the stainless steel will last longer than the original with the installation of new seals.
Doug
