I would say it was absolutely not a rebuke. Getting first hand info from someone who knows is definitely the best way to go. But Tradgang members are very generous with their knowledge and I have learned much by reading this site.
As others have noted, the arrows you have are way too stiff for that bow. (The store sold you the wrong arrows. It was their mistake & they should have known better. It happened to me, too. I spent $85 for arrows that were way overspined. We live & learn.)
Also, 145 grain points are contributing to the problem. I think with lighter arrows & 100 or 125 grain tips you'll see vast improvement.
Stu Miller's Dynamic Spine Calculator is a great tool to help archers to understand the relationship between your bows draw weight, your draw length, the arrows spine (stiffness) & point weight and other factors.
Here is the link:
http://heilakka.com/stumiller/ It's a free download & runs in Excel on a Mac or PC.
When you go to The Nocking Point, be sure to have them double-check your draw length. This is a crucial part of the equation. (And something you'll need to enter into the Dynamic Spine Calculator.)
I have a 40# longbow (I just got it - Woohoo! :D ) & I now shoot Goldtip 1535 (600 spine) carbons with 125 grain tip. I keep them 29.5" long & they fly great.
Good luck and keep working at it. Shooting trad is great fun. And Tradgang is the best online resource there is.
Yeoman