Broke an intake valve spring yesterday. Just cruising when it happened, retainer has some marks on it from hitting on the rocker arm. Rocker arm needs to be replaced. From the contact, there is a small amount of shavings that got into the head and possibly oil, but how bad I don't know. Doesn't see like much as there is only a small mark on rocker. Valve looks good, cleaned up metal shavings. I don't want to go cheap, but I really don't want to pull my engine if I do not have to. Any thoughts?