I have a question for you Bamboo afficianados, but first some background....I recently decided it's time to start using an Orvis Madison bamboo rod that my father left me after he died. I normally use a 4 wt, 7'6" Loomis GL3. When I tried out the Orvis the other day it seem very whippy to me compared to the graphite rods I own (Orvis is a 5/6 wt 7'6"). Is it my imagination? Is there some other casting technique used for bamboo? I am using a Hardy WFF5 line. Should I be overlining, underlining it? Any suggestions?