Not offended at all. And if it works for you great. But i have yet to install one that worked properly without some modification. But i have by no means installed every brand damper on every brand pipe. Some may work just fine.Fair enough, apologies if anyone was insulted.
I agree both modifications (the larger hole through first layer to allow the spring side to sit into the inner layer, or the longer damper handle) are great ideas.
Only issue will be is if he's running 8" flue pipe; in which case, sourcing a 9" handle may prove very difficult.
So, I was just offering, that in our case, neither modification was required....that's all.
Thanks and enjoy the cooler temps!