I got my gauges at Grizzly and wrench from Midway,,actually the wrench for your nut came with the notched wrench and you can have it if you want,,it comes with a brass shim you wrap around the nut then you tighten the wrench around it,,I will see if I can find the shim,but I would assume you could get the brass feeler gauge from a cheap set and use that for your shim,,
let me see if I can find it and PM me your address and I will ship you the wrench,,