Unless your wallet is very heavy and you would like it to be lighter, I would not suggest taking it to the dealership. It could be the hoses or the rack; both can be rebuilt. There are rebuild kits you can get for the rack if you want to do the repairs yourself, or you can send it in to places that fix them (for less than the dealer, who will want to sell you a brand new one.)
If it is a hose, you can buy the hose from the dealership (expensive) and install it yourself, or you can have the hose repaired by a place that services (aircraft) hydraulic lines.
If you are in the US, email me at
jward@mti-interactive.com and I will give you some referrals of places that I know of. If you are on the other side of the pond, I don't know of anywhere to refer you to.
Hope that helps,
- Jeremy