I was not intending to give solids a bad rap, my next one will have it. Lashing valves is a non issue. I went hydraulic roller due to already owning a roller block. I was going to use a solid roller in this build with my R3 block but engine builder advised against it for my application. I highly respect his opinion as this guy builds stock and super stock engines. (Incidently two of his cars made the finals at the nationals and worlds this year, he is owner builder and driver.