Re etched with Eko Etch and primed with Eko Prime. de burred aft holes in skin for replacement spar and dimpled holes. heater kicked off again and would not stay running as I was spraying the outside edges. garage cooled down fast and the primer would not dry. after about 45 min I ended up using a heat gun to keep parts warm so the primer would dry then brought them in the house for the night.