tell ya the truth I was a machinist for 25 years and did precision grinding working within millionths, I have tried to sharpen my mora blades , by hand and finally I had 2 set them up on a magnet and dial indicate them in and try 2 copy the the concave angle using a diamond wheel...cut good at first but fizzled fast...I needed a tool sharpening grinder which we had but the set up was much time consuming to do 1 set...I suggest mailing them back , or find someone that has a trade in plan...if I remember somewhere on this site there was such a deal
Best thing would be to call him. I am sure he can do them Mine come back seemingly sharper than new!!!