SRX5308 Protocol Binding Services PORT 443 LB

Hi,

with 2 ISP using static IP addresses (Load Balancing) I use use Protocol Binding to always have the same IP address for specific services. It's already working, see overview bellow:

Service | Local Gateway | Source Network | Destination Network
Jabber  | WAN1          | Any            | Any
HTTP    | WAN2          | Any            | Any
HTTPS   | WAN2          | Any            | Any

Like that, every webpage I visit using https (443) I always have the IP address from WAN2 - everything fine so far.

But now I need to visit a specific webpage - and only this specific webpage - with the IP address from WAN1. I added a custom service, as seen bellow:

Security > Services > Add Custom Service:
Name: SPECIAL
Type: TCP
ICMP Type: -
Start Port: 443
Finish Port: 443

And I added a new Protocol Binding rule, as seen bellow:

Network Configuration > Protocol Binding > Add:
Service: SPECIAL
Local Gateway: WAN1
Source Network: Any
Start IP: -
End IP: -
Destination Network: Single Address
Start IP: 12.34.567.89
Finish: -

Protocol Binding's overview looks like that now:

Service | Local Gateway | Source Network | Destination Network
Jabber  | WAN1          | Any            | Any
HTTP    | WAN2          | Any            | Any
HTTPS   | WAN2          | Any            | Any
SPECIAL | WAN1          | Any            | 12.34.567.89

The problem here is, when I visit mit specific page (Server IP/A-Record 12.34.567.89) I still going out over WAN2 and not over WAN1 as whished.

Any ideas? Thanks in advance.

Hardware: NETGEAR ProSafe™ Gigabit Quad WAN SSL VPN Firewall SRX5308