Trimed the end fairing and test fit them. Per the directions, they will remain unattached until the stab is installed on the fuselage.
When I was preping to trim the end caps (PN: FTT) I noticed that one had a manufacturing defect that would compromise the final product. A quick phone call to Zenith and new one was on it's way. I also sent the defective one back at their request. Very good customer service.