360LA hyd. lifter noise help!

On my rebuilt 360 LA I have lifter noise. I'm using Comp Cams Extreme 20-222-3 hyd. cam and lifters. The noise use to present at low RPM but went away after some driving. Now the tick comes on around 2,500 rpm and stays.

It dosn't seem to be as loud as it use to be.

I had the lifter holes honed to clean them up a bit if that makes a difference or not. Engine is newly built to with low miles.