valve noise ?

I'm getting a tick from the pass side rockers for about 5 secs after I start the car after I let it sit for more than 2 hrs.If I crank it for 5 secs or so before I tap the gas to start it,it doesn't do it.I noticed that when I swapped out the cam that the cam bearing oiling holes were not lined up,less or around 25%covered.Was told when I had it apart not to worry about it. I thought I had a bad lifter but it's doing it with new lifters too.Rocker shafts are installed right,made sure oiling holes clear.I did replce the rocker shaft bolts with reg grade 8 bolt after snapping one after readind wrong torque spec in manual.Is there anything special about those bolts?Good oil pressure,not high not low.Trying to figure out some options to fix this.Thought about pulling the cam n running long drill bit thru passages,if so what size and should I try n chamfer hole inside cam bearing so no sharp edges?Could I run hollow push rods and drill small holes in rocker where pushrod seats to get more oil up there?Don' think any of the rockers are bad because it didn't do it before rebuild.The block wasn't decked and heads just trued up.Any suggestions?Hate to go thru alot of work just to end up with same problem.Only one or possibly 2 are making noise the driver side makes no noise at all,if it was the cam bearings causing it wouldn't it bemaking noise too?