Thanks everyone. Lots to consider here:)
When I say he's in show condition, I guess I mean fitness wise. He is exceptionally fit, I've been riding him solid for seven months now. So he's got to the point where someone would say he's lean and mean;)
Yes I was taking exception to the volume of feed, I don't like feeding a great big bulky feed all at once!
I may be adding oats I think. The new barn BO will more than likely hive him a scoop in the morning for me if I ask (I hate to bother people) I guess I'll take some baking with me to the barn today;)
Also, in NZ when I worked as a hunting groom we would give the horses soaked(boiled) barley. I know barley doesn't doesn't go through the same hind gut process as oats, it doesn't fizz I guess. Is barley also an option here?