I'm not trying to be snide, but most of the problem is your roller rockers being Pro Form. They are notorious for being noisy and many problems are associated with them. If you search around on the internet you'll see what I'm talking about. In fact, the company that built my long block refuses to use Pro Form parts, and if a customer insists, they will not warranty that engine (they normally have a 70,000 mile/7 yr warranty).
If you want an affordable, full-roller rocker, I'd suggest looking at Scorpion. They are a little cheaper than the others but are still recognized as a quality product.