You asked for opinions and I gave mine. Troll - been called worse - but when you posted to this thread I got a fken e-mail because I was part of the previous conversation. But I will remove that option from this site. And yes, considering I've been turning wrenches for 35+ years and if a customer was complaining about smoke with the valve covers leaking - I would sell valve stem seals if they hadn't been done. But that's me - my opinion.