My Legacy is very jerky on acceleration and deceleration in a super-sensitive way that I can't smooth out. It's not so much a clutch-engagement issue (as far as I can tell) as it is a throttle issue. When I let off the accelerator in gear, the driveline is noticeable thumpy and jerky. When I accelerate in gear it jerks again. It's far more pronounced in lower gears/revs, especially in stop and go traffic. Car has a new clutch, and the gearbox oil had been replaced. Is this likely to be a problem with the universal joints in the driveshaft?
UPDATE: The MAF sensor was playing up. A new one from Subaru has solved the problem