i bought the centre tunnel cover and winglets this morning. I managed to fit the winglets no problem but when it came to the centre tunnel cover i hit problems. the first three nuts holding the exhaust heat shield came off no probs but the last three sheared on me. ive left it off for now until i can think of some other way to secure it, fortunately the heat shield doesnt rattle (as i first feared). the same thing happened when i removed the fuel filter heat shield earlier in the year and it seems no amount of wd-40 helps on these type of nuts., infact these didnt even have any signs of rust and still sheared.