450 Foreman Oil Filter Plate Leak… Please Help

I have a 1998 Foreman 4×4 TRX450S that I don’t use very often. I haven’t changed the oil in probably 3 or 4 years and decided to do so yesterday. Everything went well except that I now have a leak coming out of the bottom of the oil filter cover plate. It only drips when the motor is running. All 3 bolts are tight and the large rubber o-ring on the inside of the plate seemed to be in decent shape.

Any ideas on what I can do? Thanks!

Attached Thumbnails

Click image for larger version

Name:	11.jpg
Views:	N/A
Size:	45.6 KB
ID:	24271
 

Click image for larger version

Name:	Doc1.jpg
Views:	N/A
Size:	615.4 KB
ID:	24272