Originally Posted by hcccs
I'm about to put on the wings. The splice plates are marked as 899AFT and 899FWD, two of each. Is there really a difference between the aft and forward splice plates or what are the markings for?
To tell you which should go aft and which fwd
The RV-4 kit has been built for decades. The level of precision of the drilling has improved over time, so there could be a difference.
Since there is no way for me to know what vintage your wing kit was (could be from 30 years ago... or more), the best advice is install them at the locations they are marked for (why wouldn't you?)