Off hand I think the Smith Keyolhu, Komodo Dragon, Tokara 60, Black Devil 300 casts a lot better for heavy class sticks. It's true though, FM rods have one of the best finishes on the market. Do note that the epoxy coating is rather thin and will crack at the guide feet after a trip or two. Water will start sipping in and corrosion will set in at the guide foot. Since you are a rod builder I'm sure you know this should not happen if enough layers of epoxy is applied. Hope I'm not getting on your nerves by saying all the negative stuff about FM. I'm not anti FM and do own a few of their rods.
By the way is your 72GT a R10 model or off the rack piece?