I love my BF stuff, also!
And, Doug was super-nice and helpful to me, too. He's a straight-shooter, who doesnt mince words about much of anything...
He went out of his way to help me, when I was in kind of a tight spot....
Just so you know and it doesnt come as a shock.....you WILL see some belt dust on your pulley and idler, in time.....just a fact. But, if the belt is aligned properly, which I'm sure yours is, the dust is a normal by-product of doing this mod. I just wipe the dust off, and keep an eye on the belt to make sure nothing weird is going on.......