A solid roller doesn't like to idle,I guess not enough oil to the roller from what I've read. I was on the fence when I built this engine years ago roller or solid. From what I have researched the Hydraulic roller keeps constant pressure on the lobe instead of banging the roller every time the ramp comes with a solid roller.
I could be wrong but this issue has been beat to death on many many forums. I think I may be going back to a flat solid just for the simple fact I have other uses for $1000 and I like the way a flat solid revs with a stick car.
Now I have to pick a grind or have one custom ground

Gus