we had new turf put down about 8-10 weeks ago. It's now looking really patchy - the patchy bits have got dead, wet grass, lying down on the soil, iyswim. I'm quite loathed to give it a good raking, as not all the turf has properly taken yet and I'm worried I'll do more harm than good. Have had a surf to find out what to do, but most of the lawn-care stuff I can find is not about new lawns. AMy advice anyone?