Looking for help with my CC ... When driving the CC works fine to hold a speed and slow down ,however pushing the 'set' button the car accelerates very slow (this is only over the last week or so.been fine for years). Also it fineds it hard to return to speed when pushing the 'Res' button. You can see it's trying to accelerate but very slowly...Checked all vacuum hose's,one was slightly cracked ,replaced it but the car still will not return to its cruising speed very quickly once the 'Res' button is pushed. As i say it hold speed up hill and on the flat just finds it hard to accelerate using the 'set' button. If it's the CC cable not sure how to adjust it ?? Range rover 2001 4.6