Unstoppable Coolant Leak

I thought if you milled heads may also have to mill the intake because now heads are sitting lower on block and intake will sit a little high. If it looks like the leak is predominately at intake and head you may have to mill intake. There is a rule of thumb for the mill of the intake, but it's not my forte, so someone that knows will hopefully chime in.

I looked a little into that, only milled the heads .010" and I was told the intake should be fine. But it leaked very slightly before, just not nearly as bad and I was able to stop it. Part of the reasoning in getting the heads milled was so I didn't have to worry about it anymore.