Good Lord, that's an amazing improvement in such a short space of time - well done.
I bought the spider last weekend too, at the same time I bought the raptures, and I can't honestly say my putting has improved at all. I posted elsewhere on here today about a round I played yesterday on Kiawah where I had 17 birdie putts and sunk just one of them!
Guess it's not always about what you have in your hand, but rather who's holding it. I am now resigned to the fact that I am just an awful putter and always will be (sob!).
Thanks for your reply and again, apologies if I changed the direction of your original post.