I’ve got some DX shoes which as above are pretty wide, but not stiff enough soles for me seem to aggravate my plantar fasciitis, I bought another pair of the older gore-tex boots (MW-81 i think) which I always used to get on with but the new ones had the same part number but came up narrower than my old ones!
I ended up with two pairs of thick socks and doing them up super tight, then playing a hot hair-dryer over them, this seems to have successfully stretched the synthetic leather to mould to my feet. I can now wear them quite happily.
So the upshot is if you can find something close to a fit and they are synthetic you might be able to adapt them, worked for me anyway.
ps. I found the Giro HV didn’t fit me or Northwave.