ISD LIEO Olbia Scenery Problem

Hello!I today downloaded ISD's latest brilliant release - Olbia LIEO. This afternoon I flew East Midlands EGNX - Olbia in a Project Airbus A320 but experienced the following problem. At about 300ft from touchdown the runway became obscured by a layer of grass. I managed to land on this and taxied off onto the taxiway which also had patches of grass scenery on it as well. This is obviously a layer problem but how do I fix it? The parking apron was not affected.Also, when I taxied onto stand I needed nearly full thrust to reach the end of the parking position, as the aircraft stopped about 10 metres from the required stop point.Any help appreciated as I love ISD's scenery.regardsRossNottingham, England