The previous builder didn't bond the incidence pins in place very well and they came out when first trying to remove the canard incidence tabs. Coincidentally, the tab bushings were also loosened and came out. Needless to say it was time for some good workmanship so I placed the correct spacer behind the pins in order that they would stick out the correct 1/2" then sealed them in with wet flox per plans. At the same time I installed the bushings into the tabs with wet flox. No more fallouts. :)