Agree with Will370Z you don't need to rush you'll end up repenting at your leisure. In the end AA inspection is good if you are unable to take up any of the other suggestions. There are plenty out there build it and they will come sic.
I'm getting it now, I had a good look at my toes and noticed the reverse camber so swapped over my shoes and I can now walk round corners nearly upright.
If this guys one of your best mates, he's clearly not acting like it. If you have to tell him what he's doing is wrong he is not a mate and to blackmail you with "well if you can't pick me up I can't make it", is astonishing. Walk away.
WD 40 with the small tube attached to concentrate the pressure into the joints, if that doesn't work turn the radio up loud or a small set of earplugs will soon make it go away.
Yep +1 on the spacers whilst there are some that say that it didn't work the majority including me have found it does.It stops the problem by moving the sensors slightly back from the hot flow of the exhaust.