Don't know where you are at but the Mag. Moss Act. does state that the modification has to cause said failure. That means if FOMOCO states failure was caused by said modification it is up to the customer to prove it did NOT in fact cause the failure. The preponderance of evidence is on the customer not FOMOCO. That can be a lengthy process and incur timely litigation.
Sam
Yes, but, FOMOCO has to prove the part caused the problem. If they provide such evidence, it then falls on the owner to prove it did not. Like lawdog said, uphill battle, but some people like to fight lol.