3 checks for Proper Knife Alignment
First check, look at the blade from the bottom view(talampakan) it should coincide that the blade is parallel to the shank(12 o' clock) and the tip will point at the prop toe tendon. The blade and the prop toe should be forming a small letter V. The blade is positioned in between the spur and the prop toe. And not directly below the spur as there will be high probability that your rooster will hit himself.
Now the 2nd check is to make sure that the knife tip does not go over the midline of the body of the rooster, thus preventing probability of self-inflicted injury. Look at the knife from the back of the rooster, letting the feet loose, so when you straighten both feet up, the tip of the knife should be in between the them and is in turn pointed at the a-s-s. Do not go over the a-s-s. There is a high probability that your rooster will hit himself.
If you have the 1st check right and the 2nd check still goes over the a-s-s, you probably are using a longer knife than one that fits your rooster.
The 3rd check will determine if you have the knife point set at low, medium or high point. Look at the knife and shank sideways, if the tip of the knife is lower than the center of the spur, it is low point. If higher than the center of the spur, it is high point. If exactly center of the spur, mid point.
Also regarding the 3rd check, if one sets the knife at high point, you are giving away a little reach advantage.
Hope this helps you in tying your knives. Goog Luck on all your fights.