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The 120mm is 43.5mm for freewheel and 42mm for fixed. The 130mm and 135mm are both 53.5mm for freewheel or 52mm for fixed, no? I don’t know if you have hubs in hand but that’s what surly’s documentation describes as far as I understand.
Edit: I may admit I may be wrong. Surly’s documentation says there are two chainlines for their hubs. Forums seem to show they’re more.
bjf
sbbohr
Surly hub has diferent shell, 130mm for 43.5mm chainline, 135mm for 52mm
so if you pop the 130mm in the 135mm frame, spaced evenly, you are going to be too narrow.
Think about it. If I respaced my bike to 140mm and used two 2.5mm spacers my chainring and cog will still be in the same position. - OP is not trying to use the same hub respaced.