I made a gauge of all thread and couplers to allow checking front to back. The tape was not happening. There was a recent discussion on this issue at Bent Rider on Line (Trikes). Did you see the video over at the TerraTrike site?

If your trike has scary handling at speed, check the toe in. Do not assume it came from the factory or dealer with the correct setting - with perhaps the exception of HP Velotechnik. 1500+ on the Scorpion and no handling or wear issues.