He could care less about the stiffness of your arrows. That ain't the point. A 125 head ain't gonna kill your setup. It's his property, and he has years of time, money and effort put into those animals and he's just protecting his investment. It's how he makes a living dude. You only pay to play there.
ORIGINAL: fingerz42
If he is speaking from years of advice he wouldnt advise someone to change their current broadhead tip weight and throw off the stiffness of their arrow in doing so.