Hello, I am looking for someone with 6.0psd experience that has the gear to do a buzz test on my injectors. It is rough idle on cold start, FICM is good, batteries are new, no codes up, oil was just changed with 10w40 synthetic. I am going to try to grab some "hot shot secret" to throw in it to test it out see if it is just bad stiction but I want to have it fixed before winter. Any help would be great, rather pay someone cash then shop rate to someone that dosnt work on them often. Thanks.