Not yet having tried to fine-adjust my EQ-6 as yet I have views the above with interest. My first thoughts for an affordable solution are to consider removing the as-supplied adjustment bolts then enlarge the holes enough to allow tapping of a finer thread into the casing. Replace the removed bolts with an appropriate New threaded bolt. Would allow finer adjustment with a better mechanical advantage to deal with load issues. While bolts may not be quite as aesthetic (can't see them in the dark) the ability to adjust with a spanner offers even more mechanical advantage I don't think such a mod would detract from resale value either.
Just a thought.
One other benefit for those wanting to permanently mount their EQ6 is that the standard EQ6 plate (the bit that goes into the tripod) can be removed leaving just a flat base for pier adaption.