Hi, i have about 600 miles on my Mopar 499 cui with a Howard custom grind hydraulic roller cam, end play 0.008". I checked the intermediat shaft today and noticed some excessive wear, see added pictures, i also noticed some wear marks on top of the bushing to, see pic. The cam gear looks fine but the bronze gear have wear alot. What causes this? The bronze gear is a 440 source. I ordered a milodon bronze gear now and a new pioneer bushing.