Okay, got new ignition parts installed and gapped, and have a nice healthy blue spark at both plugs, found one arm of year old impeller broken off. Ordered and received new impeller, but not exactly sure which direction the little arms should be "bent" when I install it....If looking down at the installed impeller, should they be bent to the left, (pointing to left), or to the right? HURRY and thanks in advance...BTW, the book I have does'nt say....