I've called around for pricing on cam grinds and one company also offered to resurface my lifters. So how do I know if I need to have them resurfaced? They look fine to me - very smooth surfaces with no scoring or visible marks of any kind. Is visual smoothness enough or is it not worth the trouble to have them resurfaced unless there are major problems? Thanks -
Michael

(PS anyone know what the hell Woodruff keys are?? In the timing chain removal section of my manual it says to "remove the Woodruff keys from the crankshaft (if fitted)". I couldn't find anything so I hope they aren't fitted to my engine!!)