Solid rollers on a hydraulic roller cam

I have done this many times, & know others who have too. No problem if the lash is kept tight. 010-012 is too much at operating temp [ hot lash ]. Hyd cams have short lash ramps, & going too big on lash will put the lifter on the flank, which causes noise & valve train stress. Aim for 0.004-6" & you will be good.