Two vpn and two different ISP!

Hi!
I have a Problem to connect vpn to one of these ISPs I have a routerboard , and configed as loadbalancer (PCC) An adsl modem forwarded Public IP from X ISP to the router (PPTP 1723) In other ISP I have 5 IP public and one of them set on router, not bad right now when i try to connect one of this IPs with pptp protocol if default route distance is low than other one i can connect
not bad
but i cant connect to other one,
any body know how can i fix this?