Looking at DWG 28, on the aft side skin F-773, there is a rivet call-out that doesn't exactly match the rivet legend (triangle, but no center "dot") , and there is no pre-punched rivet hole in the highlighted location (F-702 bulkhead). I looked ahead in the written plans and don't see any reference. Does anybody know what this is, maybe a misprint? I'm pretty certain there is more to it, I'm just not seeing it. Thanks!