Cm2250 oil pressure numbers???

[jimeneztrans84]

2011 cm2250 450 with 501,000 miles. I bought it at 455,000. I always been using rotella 15w40. The hours I don't recall off the top of my head I think around 17,000 hours. @600 rpm idle it's at 15-16 psi and 1400 rpm it's at 35-40 psi. Current oil is at 6,000 miles. You think maybe clogged oil filter? Or just go ahead with pump and bearings?