Sorry, trying to get my head around how you only change bend at X. So say you're on the left rein - you ride out to X in left bend/flexion. Then at X, you would have to make a sharp change of bend and flexion to the right, then when you hit the track again, change back to left.
Hmmmmmm are you SURE you change at X??? I have never seen the Canadian tests though, but I know the US and Australian tests have loops to X and the correct way to ride them is to change bend over the 1/4 lines. That way you're not making a sharp turn and change of bend when you hit X.