Very long story made short- 89 xt350, made 2 bikes into 1. The good motor has about 8 k on it. I ran it a couple of times(few minutes) before I realized oil pump was broke. Repaired oil pump. No signs of damage. Put together bike but wouldn't go into gear. Took apart clutch and saw what I did wrong. While fixing that problem I noticed a few metal shavings in the oil. Bike runs great- all fluids changed-fork, brakes, oil. Put about 30 miles on it and it ran great. Checked oil filter and found some small shavings in that. Any ideas?