Granted it's not as beautifully symmetrical as if the body had been pre-drilled using a jig during construction but Jim drilled the bushings off-center to allow for an adequate range of adjustment. I put them in, snugged them up against the cross-shafts and tightened the screws to hold them there. I noticed at the time that if they were not fully secured the shaft would push the bushings back 1/32" or more when activated, visible evidence of the suspected flexing.
Here's the eye-opener for me: I expected some retuning of the changes, but after installing them EVERY pull was out by as much as a quarter-tone, with a couple of raises over-tuned a near half-tone, all due to eliminating the flexing of the shafts. And yes, I can feel the increased firmness and precision of the stops when playing, making this a successful operation with results far beyond my greatest hopes, a major performance upgrade to an otherwise superb guitar costing well under $100 to perform.
