Holy long pushrods batman. It's hard to tell from the picture, but do the roller tips on your rockers travel on the center of the valve stem throughout their travel? Because it looks like your roller tips are toward the outside of the valve stem, that, combined with the fact that your poly locks have almost 3/8" thread above the set screw, makes me think your pushrods are too long. But it could just be the angle of the picture tricking me, and maybe you have longer than stock valves and taller springs on a stock head?? You also might want to check thread engagement. With that much thread sticking up, and subtracting the set screw which is usually 7/16" long or so(same length as the stud diameter), you might not have many threads holding your rockers down. Poly locks are pretty long, so you might be fine, but I would check the rocker geometry and the thread engagement. You should have a minimum of 9 turns of thread engaged for 7/16" of engagement on a 7/16-20 thread.
If you aren't sure yourself, take a picture of the rocker from the front of the engine at rocker level, with the valve open, closed, and halfway open.
If I'm wrong I'm sorry, but I'd rather be safe and sorry than just sorry.