I would say you have a realistic range of 1.5 to 2 inches of adjustability with the spring plates. You would like your car to be close to where you want it and have the adjusting screw midway in its threading. As far as the grease fittings, I did this also. It is only going to provided grease to the outer fitting and bushing. It actually is simple. Place grease nipple at the bottom of the outer cover, midway where the bushing seats. Remove it, fit and install polyurethane bushing. Drill through the hole where the nipple fitting is to the center. On the inner surface of the bushing, create a groove so that the grease will flow from the fitting through the bushing and spread on the inner side. How well it works is to be determined. You actually could dissassemble the outer plate, regrease, and replace without altering the spring plate setting. The inner bushing is not so simple, and Murphy's law says that is the one thats going to make noise. Good luck.
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8 9 9 1 1, The last of the line.
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