Oex,
If you have already done some mustering in a C172, then you shouldn't need any tuition in 'fine points'. Assume you have done a CAO 29.10 low level course, you did do a full 'mustering endorsement', and you did undergo 'on-the-job' training?
On the other hand............... like many others we hear of, if your current employer has discovered that their aircraft insurance will be voided unless you do get the appropriate training...... then, you need more than a chat about the 'fine points'.
happy days,