To add to that, maybe your dealers are better stocked than what mine are.. but judging from what I read on here, they're not... If it's a "common" part, i.e. disk bearing, planter bearing, etc., I'm going to ensure I have some on hand.  If it's not a common part, of which of course I don't have on hand, the dealer is going to be the next day getting ahold of one anyway in most of my experiences, so calling them at 9 for them to say they don't have it isn't going to help.  the parts depots are shipping around the clock just because it's May.