I know little about locks so apologies if this is a bit basic. I need to key alike some pairs of 5 lever Chubb mortice locks so need to swap around/replace some levers and was wondering whether certain combinations were harder to pick/more secure than others?
For example, would something like 51373 with very different lift heights be more difficult than say 53545. Or doesn't it make much difference what levers are used?
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