who all does their own repairs on equipment? those of you that do, do you keep parts in stock at your shop... so in a break down you dont have to run to dealer or order parts? we have a large inventory and can fix almost anything with parts we stock. we can even rebuild an engine over night from our inventory. we even have extra engines. how many others have this kind of capability? how many consider it to be important to have ZERO downtime year after year? even with trucks. do you have back ups? can you fix it yourself? just curious how all the other big businesses on here handle repairs.