Numkang Niseru

Im kinda disappointed with the alpha 2 layer..im using the SL2 viewer at the mo.but its the same with another viewer i use. Anyways like with prim feet and shoes theres always this 'blank' spot that shows up around them when you view from a certain angle specially on beach sand and floors..am i doing somethink wrong, everyone else seems happy with the alpha 2layer ?!