Good advice there from Roland and Gulkie there mate,nice and easy with them as yearlings and at 2year olds and racing to eggs or youngsters they will do you proud,pay no attention to the old wifes tale they must train or race as ybs,plenty who do are losing them by the thousands with ybs that have been hammered training and racing and the following year fill their lofts with ybs,try and stear clear of being a mob flyer who starts off with 100 ybs and can be left with about 20 they may have good results but at a cost,a few I have known treat the birds as numbers where as we treat them as our wee friends,love of home is a very powerfull tool so stick with it mate and all the best,never trained ybs or raced them for years and am more than happy what they have done for me,winning from 560 mls will do me fine,once again this is only my opinion and plenty will not agree with me but if it helps YOU in any way that suits me all the best.