I took ages to sort my tingly toes out

tried everything.
Turned out to be the
morton's neuroma problem. Solved it with the
Specialized support footbeds. They come in three support levels, red, blue and green. Red being minimal support, green being lots. I needed the green and it sorted it right away. They all have a metatarsal 'button' which sort of acts like a spreader to stop the nerve getting trapped.
It really took every ounce of enjoyment out of my riding, it was a pure joy to fix it. They are about £25 a set. Find an LBS that sells them as they have a glass plate you can stand on which gives you a good idea of the level of support you need. They measured me and suggested blue, I put some in in the shop and they felt better but not quite enough, so I bought green and theyre superb. You even get a shim kit with them so you can fine tune knee alignment.
As for hand issues, as everyone has said, flip the stem. I find even a slight rise in height of my hoods (swivel the handlebar up in the stem) makes enormous differences. Its a bit of a black art and takes some twiddling.
Good luck