The Nikasil bore is very hard, and not sure if your rings are chrome moly or cast, but if CM then the breakin time will be mush longer. Owners manual will tell you 10 hours of breakin time. With 1 hour that is not enough time. Nothing from the pics look abnormal but some pics are tough to determine the little signs due to glare ect. But overall they look normal. Ring gap seems fine. Did you do the oil in cyl comp test to see if your problem is head or cyl. related? Most times on new heads the seats will seat further in head causing too tight valve clearance which if tight enough it will hold valve open and loss of comp. is the result.
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