That shackle in the top picture looks better than mind did. Mine failed completely and left me stranded in Gila Bend AZ. I got new shackles and bolts at a supplier in Phoenix and fixed the broken shackle in a truckstop parking lot. As soon as I got it home I ordered the Dexter EZflex and installed it myself. Easy enough, just take your time, use several hydraulic jacks and jack stands for safety. I am extremely pleased with the Dexter system.
My new toy hauler has Equa-Flex rubber cushioned equalizers by Lippert but not wet bolts or thick shackles. I'll be looking to replace them in the near future.