A mate of mine was helping out with some garden work when he accidently drove over the septic tank and crack the top part of it. Its a green envirocare model made of fibreglass. the main sides & bottom structure and motor are ok but the top is cracked on both sides. The lid that sits on top is fine as well. my question is does any one know if we can get a replacement top for it. I dont want to ring envirocare yet as im worrided that regardless of what dameage is done they will tell us we need a new one at a cost of over 3K or more. or can we repair the fibreglass like they do with boats.