One thing I love to do is never admit to my mistakes and then manipulate them into a great idea that I will claim was my intention from the beginning...
So, I'm using Dyneema to make my own rigging. I may have 'accidentally' spliced my forestay 2 inches short of the stock measurement because I 'may' have miscalculated how much line would be sucked up by the locking Brummel splice... Anyway, I have a 2 inch long shackle that will easily remedy that, but I was seriously considering an alternative; I might get the Colligo Marine terminators and just leave out the turnbuckle and use lashings instead. I can put on a nice long piece of Dyneema lashing line so it will be really easy to pin the forestay, then just pull and lash to get the mast vertical. Most of the for-aft tension will remain adjustable from the back-stay.