Alex ps and rack leaking on teh hr31 is common at this ages Ive had to do it on a few of my 31s, if its diagnosed as teh rack needs a recon mail me on maytech@bigpond.com and I shoudl be able to source you one can also help with all teh hicas parts.
when you say stuffing up is it crabbing or is it steerresistance and hicas light?