That's doubtful, operations management is the bulk of a full chapter (of 5 total--in Becker anyway). If you're having trouble on certain concepts, at least get down the basic ones that you can handle (e.g. you may have trouble with some of the cost accounting calculations, but don't skip the basics of DM, DL, OH and what is inventoriable/expensed, etc.). Unless you're a master at the rest of the exam, it's a pretty big risk to skip the section. Do your best though. I studied for BEC in a span of about 2.5 weeks total so you definitely have enough time to work through what's giving you a tough time. It's a tough section, but you should be fine. If anything, when you're getting nowhere with operations mgmt, at least review other sections so you're making a good use of your time.
BEC 86 (08/30/11)
FAR 84 (10/13/11)
REG 88 (11/08/11)
AUD 86 (11/29/11)
Exam prep - Becker self-study