once again, i have to agree w/ olds48. being in the mechanic trade for @ 30 years and owned my own shop for 6 of those, every customer expected a warrenty on parts AND labor. if i messed up on what i did, no money came in on that job. so you have to raise your labor rate to account for the occasional comeback weather it is your fault or not if you want to keep the customer. in this area, if you loose one customer due to that, the word gets around that you don't do good work or honor your labor and you loose that customer and possible more not a lot of customers in this area anyway, so every one is important. jmo