CM 2250 EGR Valve question, please help...

[JMBT]

Thanks for the replies, Waterloo: yes it is seems to be coming from the two weep holes on the valve itself, I can even put my hand there and feel a bit of air blowing.
Scottydogtruck: I already had it off and cleaned and inspected it. All looked fine wasn't even that dirty. I made insite cycle it through the full range at key on/off and it has full range of movement. It even responds appropriately during a regen.
Rawze: please tell me more about these seals. Are they replaceable? Or just another expensive new part? Yes it is the original valve 588K. The truck seems to be running really well, mpg normal, power normal, can I run like this awhile or am I facing impending doom. (Check engine lights) Thanks