zero. in my case, delivery was not much beyond quoted, but even if i had to suffer a much longer build time, i'd just plan accordingly. i think as long as my expectation was properly set and managed, i'd be fine. IMHO, nobody should ever order a custom with a sense of urgency, critical timing, and need, with no backup already in place. i think that's just foolish. ordering a custom should always go in PARALLEL with using what you already have and rely on, and are already generally happy with. i totally get the kid on xmas eve excitement, but we have to be realistic based on the combo of what we want and what that means we have to deal with due to the nature of the source. none of this is brand new discovery here.