I once had a pair of Guidi's resoled in Singapore, was very specific about what I wanted (just removed the bottom layer of leather from the heel, don't polish, don't smooth/sand down the sole, etc.). when I returned to pick them up the cobbler had cut diagonally through the heel (presumably to level the boot so it would sit flat) and sanded and polished the heel so much that they looked like formal dress shoes so YMMV.
Which cobbler did you go to? If you need a recommendation I can point you towards the guy that did both my A1923s.
IIRC they've always manufactured in China? It's quite a small operation though. I used to have a pair of their handsewn lows, wasn't super impressed with the upper leather though but I absolutely swear by their thick ass buffalo leather insoles - just get one a size or two up, wax the underside to prevent squeaking, throw em in any really uncomfortable pair of baller boots and instant bliss.