While everything is apart, you may wish to inspect the valve lifters, resting on the camshaft in the bores where the PRT seals go (just barely visible at the bottom of the photo). Lift them out carefully and inspect for cracks, rough edges, rough surfaces on the camshaft end, or any other visible damage or wear. If any damage is visible, consult a real mechanic; they are supposed to be matched for life with your camshaft, so you can't just replace them if they're damaged or out of wear spec. Take care to reinstall them (oiled) in the same bore they came out of; they are NOT interchangeable.

It's probably not a good idea to use a magnet to remove or replace them. Some magnetizing of the steel can occur which would attract traces of metal in the oil, leading to damage of the lifter face or cam lobe surface. How likely? I don't want to find out. Use a suction cup or soft wire hook through the oil return hole in the pushrod end of the lifters. (I apologize for not having a photo of this. Next time I have a jug off...)