I'm not sure if kip was ever capable of 6:11/mile for a 5K, but he did supposedly race that pace (6:11s) from mile 13.1 (halfway point) to mile 20 at the Charlotte ThunderRoad Marathon. Of course, Witnesses say he cut the course.
I think if we can look further into the KL, we can gain some additional insight and the smoking gun, as GK points out
Many of the early KL detectives, including ScottH and Ouch1000, knew he had cheated but Admitted they were too lazy at the time to look into the how. It wasn't until we looked at reverse IP addresses, race photos, outfits, etc more carefully that things became more clear. There are still questions to be answered and stones left unturned.
Did he take a bike to the Boston marathon in 2010? How did he change headwear?