sb1 alignment

[ozzy1]

I clamped a short piece of 25x25 to BR5 to align at the lower edge of SB1 then clamped a longer piece to BR5 and tacked a leg to it to hold it up to reach near the top of SB1 this gets the alignment to BR5 square then tacked SB1 to BR12 and then you can check the 151mm offset and jiggle about if needed and put another couple of tacks in place.