This is actually quite interesting, because Vegatrem says on their site that the system supports all string gauges uo to 54w... The system not being able to handle one of the most common gauges properly is quite baffling. Though they do sell different tension springs and this might be the cause. They should be more clear on which spring should be used for the given gauges/tunings. Anyways, problem solved, which is a good thing, innit?