Pretty strong statement, RobertMac. Biggest problem?
NR, I don't doubt your experience, but I wouldn't be so brave as to say everybody has trouble with them.
I know of 3 large outfits ranging from 1,100 to over 5,000 head and everyone of the cows traces to EXT at least once, some up to 4 or 5 times, and 5522 and E31 more than that.
The disposition doesn't bother them.
I think it has at least partially to do with whatever else is behind the cattle.
I think EXT will sire about 2x as many crazies as average. Just a guess. I sure wouldn't deny that. Just never heard of anyone having trouble on a large scale like you have had with these. A few, but not the whole bunch. Or cases where farmers had a "whole bunch" of crazies, like 4 or 5 head, LOL.
Badlands