Hey everyone! I wanted to share some of my experiences with necks and a theory about basses left in a hot car. And if you don't want to read all my babbling nonsense - TLDR is that I think basses left in a parked car for even 15-20 minutes is enough for the neck to bow under the string tension. backstory: I was drawn to guitars and basses (and violins and accordions and cuckoo clocks etc.) when I was really young and always had a keen interest in how to get the best setup etc. My first experience with a "truss rod that wouldn't" -- I was young and dumb and bought a '67 Candy Apple Red Jazz Bass with matching headstock at a pawn shop. The truss rod wouldn't take the forward bow out of the neck and, being young and dumb, I kept turning and snapped the truss rod. How I wish I hadn't done that and wish that I still had that bass. Anyway ... in the many years since that broken truss rod, I've bought many a used bass that came with super light gauge strings, too much relief and a truss rod that was cranked. And I've had exceptional luck clamping the neck into a backbow and heating it to get the neck back to where you have full range of truss rod adjustment. I've straightened several necks and had them hold up for years without any problem. And I've been able to buy several really high end basses for low money because the seller was frustrated with only being able to use super light gauges (it has rarely been disclosed to me that the truss rod was maxed out - but I assume that's why they sold it - the price was low and I knew I could fix it so I haven't complained) And I've read lots of threads about heat straightening necks pros and cons. In my experiences, however, I've found I don't have to heat it nearly as hot as many say --- nor do I have to keep it at that temp for nearly as long as many say. I've been able to straighten necks after holding them at 150F for only 10-15 minutes and leaving them clamped to cool down. And this leads to something that has been nagging at me for years. I suspect that when you leave a bass in your car with the windows rolled up on a hot summer day that is enough to cause this problem. I read a lot of posts here on TB about maxed out truss rods. Anyway ... that's what I'm thinking. Curious what you guys have to say about it. Just getting to a daytime gig early and leaving the bass in the car while you get lunch seems like it could be the cause of many of these posts I read about maxed truss rods.