NutherA2,
Good to know you're there! You can crack this!
Tip wasn't a false lead. You needed to find which hat someone in Aubagne wears (a Kepi) and then 'tip' it (re-arrange it) for Pike, as you did.
Young's Modulus and the Rotational Constant will tidy things up to find a forum favourite; our antipodean correspondents will be pleased.
Mr Chopra's dictionary was to help you get from stiffness to Young's Modulus and from going around to the rotational constant. His web address is a happy co-incidence which I hadn't spotted.
I reckon you'll have it by the time I've finished dinner, if you are watching the forum. We're having two courses!