A call to EGO CS is in order. They will help you out. Call early in the day to avoid hold times. They can be reached at 1-855-EGO-5656 (1-855-346-5656) from 8:30AM - 8:00PM EST (Monday - Friday) & 10:00AM - 6:00PM EST (Saturday & Sunday).
RCPW.com is another source for EGO parts, but try EGO CS first.