toona:
Should be still in your equipment . When the rental ran out it gives you back the starter club. All you should have to do is equip your existing driver.
If he can equip the rental, then why would he not know how to put the other one back? Come on. Your answer just made him look stupid. Why would someone post in the forums about this, and not even know how to put it back? Think first before saying something.
Also, he is a master, and that should be a clue.