Tell me about it mate!!!! My Focus RS is just the same, in the last 4-5 weeks it's been off the road about 3 times (fortunately with just minor things). It gets to the point when you think fuck it, i'll repair it for good with a box of matches and a gallon of 4 star but then once it's sorted out and on the road and you've just had an "enthusiastic" drive it's all worthwhile and the problems forgotten about.