One thing I've come to realize over the years is that time is money. If I can wait a month to save $500 on something like a part I need, it's a no brainer to do so. I always have something else to work on. It's like making $500 for doing nothing. And although I'm not a customer, if a shop said they can have my car fixed by Friday for $1500 or if I wait a month, for $1000. I'll gladly choose the latter.All I have time for is Diagnose, Repair, Repeat. Do all my wreaking yard running on Saturday if needed.