I have a simillar problem - I may know the material well, but my ability to do arthimetic/rearrange equations/do simple calculus always deserts me in exams. Coupled with my usual problems with copying accurately (either from my head, or from paper), I'm a bit of an exam disaster.
I suspect...
I'm looking for something that covers similar material to Electromagnetism, Grant and Phillips (Manchester Physics Series), but is shorter and easier to read through - I find Grant and Phillips useful (and will buy it), but could really do with a summary/outline to build on.
Any...