The only thing I can think to do at this point is to start documenting each time it does it to see if there's any kind of pattern or repetition of the failure at certain clamps even though every single one of them has been changed over the last year or so.
If I have the space I'm thinking about putting two clamps on each one. Sounds stupid but I don't know what else to do at this point.
Here's another thing that sounds stupid... Is it possible that if the injectors were slightly stopped up it could cause a back pressure situation? Doesn't seem likely since there is a return line.
I still have 3 or 4 of the injector type clamps in place and you can see that one has been tightened enough over time to be near the end of it's travel.