Once I get my hydro-assist steering fixed I'll be installing a smaller Grant wheel. On the steering, I suspect your hydraulic ram is worn out if you are not getting full boost. I have been fighting this for about 6 months now and after long discussions with Howe Performance, we can decided that the problem is likely in the ram. Little known fact is that they use o-rings internally for a seal on the piston and then had teflon rings on either side. When the o-ring goes, you still get some boost but there is a lot of leakage and now the ram turns more into a super-duper steering stabilizer instead of a power-assist device. I'll be getting a new ram for mine and then getting the old ram rebuilt, but accoring to the Howe folks, rams should be rebuilt once a year if not sooner. The guy was saying that the race trucks that use their stuff, rebuild the rams after every race.

And the other problem with the ram o-ring goes, pieces of it can get sucked through the plumbing into the steering box and plug up ports and valves inside it.