Advise on these butternut squashes please? The flesh is like grated strings?

[chloesmumtoo]

I use butternut squash regularly but today on preparing to make my sauce it appears different. On trying to remove all strings ect I have found all the good flesh very stringy too. I have found myself scraping it away and it resembles grated carrot. Never have I had the flesh like this. I am afraid it wont be nice and am slightlyy put off on making my sauce for the freezer. will it be ok cooked?

sounds like a spaghetti squash

I wouldn't make a sauce with it, I stir fry it

oh thanks