Just agreeing with what has already been said.
I bought a Greyline 15' last year, and at the same time bought an Evotec LW 8twelve to go with it.
I'd been up to Scotland to have a couple of lessons with a well known UK instructor, and had used exactly the kit I ordered. He did say however that he'd had a new handle on his rod. After I got mine I thought how tip-heavy mine seemed compared to his and when I think back I wonder if he had his seat changed for a downlocking one.
Anyway, I've now got an Evotec HD 11fourteen, which has solved the problem, albeit at the expense(!) of increased overall weight. Might have been cheaper and more effective to have the seat swapped though!!

Would have thought that these two products would have matched better.
(For my Grey15 with my Evo8twelve the point of balance was about 8" above the top of the foregrip. Downlocking seat would be better) :tsk_tsk: