Callbacks are patterned, and every pattern has a five-minute vaccine. The goal is not fixing fast; it is never being called.
Spec-stage vaccines
Hinge-count by height, steam-zone detailing, sheen matched to household reality (matte for families), and boring confirmed against the actual hinge. Half of year-one calls are decisions, not defects.
Transport and install vaccines
Carton checks with photos, correct staging, the alignment pass at eye level, and films fully peeled. The other half of year-one calls die right here.
Handover vaccines
Care card, touch-up kit, the taught three-screw hinge tweak, and expectations set on cure hardness. A client equipped to fix a chip and a sag simply never dials — and reviews mention how solid everything feels.