Typhoon It’s a 355. The Speed version is .370
And a .370 ferrule was most likely used on the club. So, of course the ferrule is coming loose. Take a heat gun and heat the ferrule to shrink it a little; it will then stay in place without epoxy.
My favorite iron was always the 6. Used it for chipping around the green, & it was the only club I could hit the exact same distance every time. Now, I'm like that with my 8i. The 7i had it's time, but as age progresses, the number is getting bigger.
