i used that repair kit and it's not as easy as some make out.
first job need to remove air pipe.
then unplug the valve.
undo the 2 torx screws.
remove unit in a horizontal motion (will be a bit stiff).
now comes the hard part. removing the plastic bit under the cover. you need to pull with pliers as well as in the middle lever it out with a screwdriver. it wouldn't budge with just pliers. getting the bolt out was easy.
the next hard part was sticking all the new parts in whilst ensuring the disa valve operated full motion and freely. mine was rather stiff, had to lube it all up. i didn't bother replacing the orange seal it looked perfect to me. in fact the whole valve looked perfect tbh. didn't even need doing.
i would take a look first before attempting it. might not even need done.