Things like this happen and the only way to twart it is to have buddies that do this ritual every time they're out there...it makes you understand why being anal about what you do when building it the right way the first time does and pays dividends with less headaches. I think in 4 years of racing I can count on 1 hand the times I had hood up or car in the air to fix something at the track, but I seen plenty of "back woods buddies" make this fixing problems at the track a weekend ritual
You need to adopt a serious nutn and boltn regiman during the week to find any short comings and deal with it correctly instead of hodge podging to make it work for now and fix it later...bad habit to get into, I used to be this way years ago until I realized it costs me more money/time to constantly redo things again and again "later" than to do it right "now"
Things will always happen-that's racing, but you can prevent alot of headaches by doing common weekly maintenance, smart building, and attention to details. Good luck next time

Not trying to preach like "dad", but I think I get more frsutrated at guys that constantly have problems since there is always a reason those same guys always have problems...my very close friend and his family are these types and I still cant get'em trained LOL!!