Alas almost all of our great ball playing second rowers have had a tendency to be a bit lazy in defence and they do get caught out.
Huddart, Beath, Wynn, Jansen, Gourley all terrific players that had the luxury of top class defensive centres beside them that did a lot of their work for them.
Langlands (when D P played F B), Beattie, Johnstone, Finch, Quinn, Coyne etc etc
Luci has Suli who is also suspect in defence and that is why K F looks spent in almost every game because he cleans a lot of it up for them no quite Poppa but a good tough tackler all the same but that fatigues him and diminishes his attacking game.
With V H coming to the left (seems logical) that might strengthen the defence and allow K F and Luc to do more in attack.
Fingers crossed.