With out seeing your bucket, I'll not give you advice on this...
My wife's cousin has a JD Mini-EX that I borrow when I need it. My payment to him is to either service it and/or repair stuff he breaks-lucky me.
The last "payment"to him was to replace the four teeth, because two had fallen off. Well, he hadn't told me they fell off a long time ago! The two outside shanks wore worn down enough that the new crimp-on teeth would not stay on! What a PITA! So, I ground out the welds for the outside shanks and replaced them. I forgot to take picture of the old shanks before I removed them, but you get the idea I am sure. I scolded him for letting this happen, and he promised to keep extra teeth and replace them immediately if one falls off! I went through about 12 cutting/grinding disks! Not sure how much wire and gas. I wanted to get some hardfacing wire but the local shop would only sell me 25lb spools and I did not have time to order any before he needed it again.
So far, they have stayed on!
Here are some pictures: