1:1 takes precedence over outbound NAT.
You are probably going to have to post what you have done instead of a description of that you think you have done.
We have a 2nd Static Block coming through same WAN (182.x.x.x /28). Not sure where to configure except as a Virtual IP which I have yet to do
Is that routed to an address on 70.x.x.x /28 or is it somehow on the same interface.
If it is routed you can do anything you want with it. Use it as VIPs. Put it (or a portion of it) on an inside interface, disable NAT, and assign addresses from it directly to inside servers. Route it (or a portion of it) somewhere downstream.
If it is not routed and you are not yet using it, I would ask them to change it. There are no downsides and lots of upsides to having a routed subnet.