You should not only follow the recommended throws, but it's very worthwhile to do a couple of other things that're done during the control system installation.

There is a rule that the connections should be at right angles. That's an important thing. Look at your pushrod and the angle it makes with the servo arm when the surface is in neutral. You should see a 90degree angle. If you don't, unscrew the servo arm and set it so the arm and pushrod are at 90degrees. Now adjust the pushrod so the surface is back at neutral. You're halfway done. Look at the pushrod where it connects to the surface's horn. Draw a line along the rod to where the rod connects to the horn and then draw a line from that connect point straight to the hingeline. The line along the rod and the line just drawn should make a 90degree angle or very close to a 90. This one is hard to fix. It's actually set when you install the horn. So do that right when you're assembling the horn to the surface and you won't need to fix it later.

Another detail worth following..... If you're assembling a trainer or any plane other than a 3D do the following. When you assemble any connection, start out with the connection for the pushrod at the servo in the hole in the servo arm closest to the servo. And assemble the connection at the surface's horn in the hole farthest from the surface. Then, check the surface movement to get the recommended amount of throw. If you need less movement, you need a taller horn. If you need more movement, move the servo connection out one hole or the horn connection in one hole. Need more? alternate which end you change by one hole at a change. That way, you'll keep the leverages in the system favoring the servo.

Do the adjusting in the mechanical hookups on the airplane first. If you need to fine tune it, then go to your computer radio. Going to the radio first is a bad idea.