Sounds like they need a boot up the backside. I can see the red faces now when you tell them what you know. Our new impreza has a very high clutch bite on the pedal. No slip, no judder. It is cabled so I will look at adjusting the cable. My thoughts are to just replace the clutch as its only £50-60 for that model. Also to cut cost I will do it at home. Is there a guide for replacing a clutch of not, what is the best plan of attack? Engine forward or gearbox back? There's no rush for a repair in a day it will be in the garden in the air as long as it takes