Well after a good night's sleep I gave it another try. After a few
more hours work, I'm pleased to announce better results this
time....I've now got it down to only one corner off by 1/16"-minus.
Unless someone tells me different, I'll be considering this "good
enough".
The problem: I was using an automotive bottle jack to raise one
corner or the other, then screwing blocks to the side of the strong
back to hold the boat cradles up at that new level, then taking the
jack out. I finally realized that after I removed the jack, there
was just an ever so slight amount of "settle" that was making the
boat's new level not match what I had measured with the jack in place
(maybe I have a "weakback" instead of a strongback). I was chasing
this settle back and forth yesterday without realizing it. After I
started compensating for that, the boat started to level out much
better. And thank goodness for electronic levels - I have a lot of
respect for anyone who can do this with a water level.
I'm not actually ready for beam mounts - this was a dry run, to see
how bad the situation was. So...back to trimming on the anchor
well.... :-)
thx,
Jay