Quaife Steering rack tuning problem

[filh]

Sorry for my late reply , but I also have Computer problems .

I only have manual steering (no P/S) my tyres : Toyo R1R 195/50/15
pressure 2,1kg

I set caster and camber same as it was with stock steering rack .
The preload on pinion was set as in workshop manual (2kg/cm-2in/lb) a very low value. Pinion is turning free and whithout problem when the rack is not in assy .
But it was very hard to set the rack clearance .
I tried to fix clearance as smooth as possible .
But , by moving the rack from left to right , you can" feel the teeth".
I didn't notice that on the stock steering system .

As it's a racing part and a shorter steering demultiplication , it's easy to understand that the steering wheel will be harder to move .
But , when the car was on his wheels, I had a try and , as I said , felt hard point in steering and no steering return .
I think the guide rack could be the reason of my trouble . See the pic added . That part is as old as the complete steering rack and may perhaps be to old for the new well shaped rack.

what do you think ? I must insist , I have no steering problem with the stock parts on car.
regards
Phil