I have just received the raw scores for my 6 yr old twins WISC IV test

Twin 1
VC 46
PR 46
WM 31
PS 27
FS 150
FSIQ >138

Twin 2
VC 43
PR 47
WM 30
PS 27
FS 147
FSIQ >135

I have a few questions if anyone has the time. Firstly I am 100% sure the addition of scores has an error and twin 2's PS should be 31 resulting in a FS 151--> can anyone tell me what this would then make her FSIQ? Also what would both twins GAI be and how do you calculate that? lastly anyone else have fraternal twins with such similar profiles?

Thanks in advance