Not a goodie or a mod, but working on the sling and goofed up one of my rear axle shafts. I did this with no power tools, only a 24" cheater bar and my little ole muscles. Now, granted, once it bound up, I couldn't move it, and took it to a shop with a big impact wrench, so it did the worst of the damage, but somehow I started the damage. I really thought axles should be tougher than this, and the nut would take the damage first, or it could have just been a defect.
I've been dealing with some vibration in the sling and when looking, noticed the rear right wheel had just a bit of play and it seems to be in the bearing, so was taking out said bearing assembly when I did this. So, leaving for a salvage yard 3 hours away that says that they have a vette in stock that is the right year (88 - 96). If I had more time, could get it shipped, but leaving for the Rockies on Thursday.
New bearing assembly will be here later today.
Even though it's broke, it's fixable and this is still a fun assed hobby. I'm like a kid at Christmas anytime I'm playing with the sling, be it in the garage or on the road.