I am assembling my b16 head and two of the small pistons in the rocker arms are not coming out. I had cleaned everything once a few months back in my parts washer and hit them all with a little wd40 to prevent rust. I put all the rocker arms in a small box and there they sat till now. I only have a small magnet right now that doesn't seem strong enough and I sat them in a cup of oil to soak, maybe that will help.

Any ideas?

 

soak them in pb blaster, stuff to get rid of rust