i can't find my 1 2 items on the keel batten either.
I built my BRS 15 several years ago. I don't remember any major problems
with most of the boat.
My best memory was that i clamped the batten to the transoupme and both the temporary frame
and forward frame. I then pulled the bow secton down so i could line up the amount needed to removeto fit in,
Any material removal i would have used a plane and using estimating to trim as needed.
NOTE: I used lot of epoxy thickend to fit parts, After painting wood and filler are not noticable.
I enjoy my boat qnd find it easy to sail. The boat is much more stable and safe that the skipper.
I have sailed it in weather the i was very nervus about getting back upright.
Tom Distel BRS 127
Lansing, Mil