before main triangle assembly:
prep new HT: drill vent holes
drill bottle boss holes, braze ST bosses (done)
prep lugs (bevel edges, ream out to fit)
drill 1st (outer) pin holes
manipulate lug points to fit, determine clamping method
do a practice braze
DT shifter bosses...eyeball position (12-13 cm from HT center), secure with file tang or vise-grips
TT cable stops...
CS cable stop...
over-BB cable guides...make hold-down