Hi,
I was about to put some Thomastik-Infeld JS112 flatwounds on my 330, but not sure if it's a good idea. The strings are 12, 16, 20, 27, 37, and 50. I started to put the 50 on, and at first I wasn't sure if it would stay in the tailpiece because it's too thick, but then it seems it would. However, it doesn't really fit in the nut, sort of sits on top as opposed to completely in.

Plus, I'm not clear on if it's even a good idea at all to put this gauge on this guitar.

I got these because I read that this would be similar to what John Lennon used in the early days.

If I should not use these, can somebody recommend what flatwounds and what gauge? Would cheaper D'Addarios do the trick?

Thanks.