routing 2 networks internally

[RadioX]

I have 2 networks
208.xxx.xxx.xx
65.xxx.xx.xx
I have policy routing setup so 65.xxx.xx.xx goes out serial interfaces 2/4 through 2/7 All other traffic goes out ser1/0

Now I want all traffic comming from 208.xxx.xxx.xx destined for 65.xxx.xx.xx to go through the router and return through the router instead of going through the ISP on the way back. Right now 208.xxx.xxx.xx goes through the router to 65.xxx.xx.xx but al traffic comming from 65.xxx.xx.xx goes through the ISP and then back down to 208.

How can I set this so 65 still keeps its policy route except for when it is routing over to 208.

Thanks for your help in advance

Ron