Just wondering how many miles you can go before you'll have any problems with injectors 2 or 7? I do carry an ice pick and instructions just in case. I only have 68,000 original miles on my 05 HD 2500. Is there a set time I should do the ice pick fix or just drive until I have a problem. I had to do the ice pick fix on my buddys truck last summer, but he had close to 200K on his truck...