Well ive done mine now aswell, was never gonna take me 10mins, it took me over an hour to get the left pipe off!! plenty of nicks an scratches a blister an 3hours later, i had it off!! (the valve that is) Replacing it with the new one is the easy bit! the top hose barely fits, but if ur carefull an dont keep taking it off an on, otherwise the ends just split, its just about ok. As for performance i think it is a lot smoother an seems to be a slightly faster pickup after a change of gear, BUT maybe its just me but i think i can still hear the noise!!!! but it does seem quiter. I think il look into the wastgate bit that had been mentioned in this link, can anyone advice me on where abouts it is an what to look for, is it just a case of locating an cleaning, or will it need replacing?

Still very happy with myself for doing the job without losing my temper he he he