Surface Shader Issue

Edit2: New Issue...

Code (CSharp):

1. Shader "Custom/WrapLambert" {
2.     Properties {
3.             _Alpha("Transparency", Range(0, 1.0)) = 1.0
4.             _MainTex ("Color (RGB) Alpha (A)", 2D) = "white" {}
5.             _RimColor("Rim Color", Color) = (0.26,0.19,0.16,0.0)
6.             _RimPower("Rim Power", Range(0.5,8.0)) = 3.0
7.             }
8.         SubShader {
9.         Tags { "RenderType"="Opaque"}
10.     CGPROGRAM
11.     #pragma surface surf WrapLambert alpha
12.     #pragma target 3.0
13.  
14.     half4 LightingWrapLambert (SurfaceOutput s, half3 lightDir, half atten) {
15.         half NdotL = dot (s.Normal, lightDir);
16.         half diff = NdotL * 0.5 + 0.5;
17.         half4 c;
18.         c.rgb = s.Albedo * _LightColor0.rgb * (diff * atten * 2);
19.         c.a = s.Alpha;
20.         return c;
21.     }
22.  
23.     struct Input {
24.         float2 uv_MainTex;
25.         float3 viewDir;
26.     };
27.  
28.         sampler2D _MainTex;
29.         float4 _RimColor;
30.         float _RimPower;
31.         half _Alpha;
32.  
33.         void surf (Input IN, inout SurfaceOutput o) {
34.             o.Albedo = tex2D (_MainTex, IN.uv_MainTex).rgb;
35.             o.Alpha = _Alpha;
36.             half rim = 1.0 - saturate(dot (normalize(IN.viewDir), o.Normal));
37.             o.Emission = _RimColor.rgb * pow(rim, _RimPower);
38.         }
39.     ENDCG
40.     }
41.     Fallback "Diffuse"
42. }
43.  

Why does this cause some of my models to disappear??

But if i add.. Queue" = "Transparent" to the Tags.. it works a little more, the gameObjects still disappear in certain spots while playing. Sigh I don't want to compromise - I wish it would just work :<.