Originally Posted by Airhead Wrangler
Better fitting guides. BMW, rather than fitting guides to the valves, uses a one-size-fits-all approach which rarely results in valve to guide clearances that most would consider ideal. Most head shops will start with guides that are too small and then size them to the valve stem for a tighter fit.
Roger that... thanks. Shop supposedly calling me today. Jig coming next week. Time to get things together.
"And if we have food and covering, with these we shall be content."