I've only had a few solids, all in different motors. Two picked up with looser than recommended lash. The other was already at .030 and .028 per the manufacturer and tightening it slowed it down.

I theorized that my junk, with marginal to poor exhaust, tight converter, and shorter stroke generally performed better with less seat timing.

When you run the numbers, 0.004" might change seat timing 10°, but only change the 0.050" numbers by 3°. Kinda like making the ramps faster without changing the cam. Of course, its still a net smaller cam.