Doubles/Triples Endorsement

I went today to take the doubles/triples test and failed. I had 15 right and 4 wrong and the last question would determine whether I passed or failed and I unfortunately got it wrong. I read the manual, took practice tests on cristcdl.com and another site, but a lot of the questions I saw today weren't on the practice quizzes. Can anyone direct me to a site that has more updated quizzes or has someone taken the test recently have a site to help me better prepare for next week? Thanks!

 

Thanks for the responses. Today, the test had you could miss 4 as long as you got 16 right. If you missed 5 you failed or if you got 16 right you passed; whichever came first.

A couple of the ones I missed were one picture had the truck making a turn and asked how you would make the turn in a double/triple. I missed another one that asked which was true and I chose the answer "stopping distance times starts from the time you foot touches the break pedal and applies pressure" but the correct answer was "it takes 4 times the stopping distance to stop at 40 mph as it does 20 mph". I also missed a couple on which break lines should be open.

I have an interview on Mon for a job that wants me to drive doubles/triples. I applied 6 months ago for a route position but they called and offered me a shuttle position driving doubles/triples. I told the guy that I didn't have the endorsement, but I'd try to make before the interview on Mon. I'm afraid now that me not passing is going to knock me out of the job, because I cannot test again until Thursday.