I am a telecom ET for BNSF and am cross crafting to signal ET and found out I have to pass the ISCET test to transfer. I have the study guide and it is awful. I have been an ET for 32 years and have used none of the information that they ask for on this test. JFETs, Colpitts oscillators, and a host of electronics math that I never have and never will use. Has anyone taken this test recently? I'm not sure how much of this will be on the test, but I am freaking out. I have 4 days to prepare and frankly don't know if I can learn it all in time. Any help?