Just went through recurrent in ATL a couple months ago for the 45. Like was previously said, there are 3 reports of asymmetrical spoiler deployments. If my memory serves me right at least 1, maybe 2 were on FedEx airplanes on approach to landing. (Fedex was the launch customer for the LR45). So there is a SB now because of those early bugs. Atlanta Flightsafety is showing asymmetrical deployments at 3 speeds all in clean config: about 200, 250 and 310 indicated. 200 is manageable with opposite aileron, 250 you need to pull the spoilers hoping the opposite side comes out, and at 310, unless you know it's coming you are probably going to roll. Like was mentioned earlier, spoilers are not to be used with flaps. Hope this helps.