If you can, take a video at feeding time and post it. I'm switching over the LMB in my pond to feed trained ones. All the feed trained ones are tagged, so they are easy to spot. It's going slowly, and I've only seen 1 other LMB that doesn't have a tag in it feeding. One day I'll catch that one and slap a tag in it too.

www.hoosierpondpros.com

[Linked Image from lh6.ggpht.com]
http://www.pondboss.com/subscribe.asp?c=4
3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).