DaytonaGold, is your handle tapered and only fits snugly at top portion of the tubing it fits into. I turned mine in a metal lathe to 1.375" +.002" diameter and cut end off at a 20 deg angle to fit tightly all the way down in tubing to reduce stress on the area yours broke. Anyone with a wood lathe or hobby lathe should be able to do this relatively easy. I actually cut the standard tapered end off that comes on most handles while cutting the 20 deg angle. May be worth a try to reduced stress to welded area while digging.
Best regards, Walt
Best regards, Walt