I'm going back to the issue of the boots not fitting anymore. Assuming your foot didn't change...maybe the footbed in the boot broke down and doesn't fit your arch right anymore?
I have one set of boots that doesn't work without a set of SOLE insoles. Take the insoles out and use the OEM insole and my toes slam into the front no matter how tight I lace them. Put the SOLE in and the boots fit perfectly.
Just a thought. At this point, I pretty much only have boots that have either SOLE or SuperFeet in them. Damn these tall arches of mine...
Good luck!
I have a pair of Asolo's that ,when bought, fit perfectly. After a year or so of getting wet and dry and heavy use they got tighter and tighter. I changed insoles and such. I think the outer leather shell shrunk and now the do not fit at all. Makes no sense , but that is my experience.
