Is that a problem that happen often....is the EGR bolt are fragile ???....is it on the V6 engine...'cause I have a 4cyl. engine and I have EGR high flow code too....but me I think it's the EGR sensor not the EGR valve who's faulty....but I just want to know if I should be careful when I remove the EGR bolts they seems to be fragile as you said...

thanks