I need some advice on the best way to refresh the forks on my NSR 250 sp. It has gone soft and I am sure it has never been refreshed. Here are the questions:

1. Buy all new seals and bits refresh the fork oil and reuse the stock spring


2. New seals, refresh oil and replace spring


3. Replace all internals with a cartridge style upgrade


4. Please suggest a fork oil weight as well thanks.



Money is a concern but if the cartridge designs are a vast improvement I may pop for it. The bike is not raced and just ridden on weekends. Any advice appreciated. Also, who is the best source to find the seals, springs etc.
_________________
'93 MC21 250sp Repsol "Doohan"