Traditionally fine fly rods have an extra matching tip. They are typically the section that get caught in doors or limbs and get broken. It is best to alternate use between the two. One tip has 1 accent wrap at the tip top and at the ferrule. The other one has 2 accent wraps. They should both have very similar action. I usually use tip #1 on odd dates and #2 on even dates.
The ferrules should go together and come apart smoothly. Occasionally a small amount of paraffin wax should be applied to the male sections of the ferrules. Too much wax could cause the sections to come apart when casting. Only apply when needed.