I am goingto have to throw some rocks at you hear...................
First of all stating M10x1.25 by whater ever bolts, do not come in stainless steel is ignorant. The most certainly are made in stainless steel, you can find them at any fastener house.
Second of all, the kit I got contained very high quality fasteners that functioned very well so far. I don't know what kit you got, but it doesn't seem to be the same as mine. All of my fasteners are graded and hand polished. I will put my PE stamp on that. UI have not had any trouble with bolts stretching, seizing, or doing anything else you have stated. Antiseize should not be necessary on any of the threads that are not exposed to weather or a bi-metallic fit.
I apologize if I am picking on a retard here............ :ermm: