Hoping for some advice. I've a Clio 172 cup, had some issues with immobilizer. Reset and cleared codes but then it ran bad, struggle to get passed 2500/3000 revs, rough idle and emission engine light was on. Diagnostics said the lambda sensors but put this down to the decat. Mechanic friend said plugs/leads. Took the inlet off and thought I'd take the cam cover off to paint not realising its not like normal cars, only lifted one edge 10mm if that. Then decided to google why I wouldn't come off. Have I messed up? I bolted it back down swore alot. Plugs were fine btw. Really losing the will to live an love for this car. I know I should leave somethings to those who know. Any help would be appreciated. Thank you