Hi pjl,
I re-positioned the original triple blocks to starboard by one jammer width, drilled/tapped the coach roof for two new holes on the starboard side of the jammer, and reused four of the original holes. The original SS countersunk bolts were used.
I then drilled & tapped six new holes for the new triple block, using the same size/length bolts as the original jammers.
Steven
SV Konan