I have only 37 hours on my 1528. I believe the backhoe model is a DC10. I am in the process of digging post holes in our rock based Delaware County, NYS soil. Have broken two teeth off so far. Never found the first one. The replacement teeth slide over a smaller solid tooth and are then welded in place top and bottom. Today, while digging, a tooth peeled back 180 degrees and was left attached by the remaining weld. Replacement teeth are only about $20. but this is beginning to frustrate me. Does anyone else experience this issue? Are there any bolt on teeth available like on the BX models? Thanks for any help or input.