Load Balancing IIS 8

Evaluating Virtual Load Balancer's and trying to get simple setup of 3 IIS 8 Servers to work with Kemp

Can directly reach each Server stand alone using there IP addresses

VS IP address is in the same subnet but can not get it to work via this IP nmap show port as listening

Same setup with Zen Load Balancer works fine

Any idea's what I could be missing or need to try