Was at Kings Island this week and while waiting to load onto The Bat I noticed a track support weld joint painted a fresh and incorrect orange. It looked like they had fixed a weld crack.
Considering the following:
* How many high-stress weld joints there are in any given park,
* How few welds are visible to riders to visually inspect, and
* How easy it should be to repair and color-match...
If we're starting to notice these as lay riders, they're probably very common.