first things first, after a new cam/ spring/ pushrod instal (comp) i broke my stock rocker, lifter, new spring and bent a valve, i removed several netal bearings from the head. i removed the heads had them send out and manley 2.02 1.57 valves, comp sent me all new rockers ( promangum 1.75s ) lifters push rods, and spings. i put everything together it ran great i drove it for the night and parked it, the next day i come home start it and theres no oil pressure, i cracked the filter and start it and theres nothing. so i removed the front diff, took down the oil pan, removed the remain neetal bearings, and replaced the oil pump ( the old one the check valve was closed), after the once again the truck ran great for about 2 weeks and then i broked another rocker, the brand new rocker, luckily there was no damage to the head, i inspceted everything no other cracks, a clean break this time one sliver alu in the head and that was it, i put the truck back together and now i have no oil press again, i am very angry to say the least, what else could be getting into my pump to clog that checkvalve? i am currently working on taking that pan back down again