LR was always one of my better areas, but i found that when i started studying i wasn't careful enough when making deductions and inferences and would often take an answer that o'erreached the evidence and o'erlook an answer that was correct without inferring too much. you really have to watch out for words like all and every in answers. they tend to be a dead giveaway that an otherwise good answer could be wrong.
as for the parallels, well, those are just the bloody devil.