FWIW
Bushed lifters NEED OIL all recent improvements to bushed units is in "oil to bushing" dept Every sort of groove/hole/ditch/passage is being employed BEST ADVICE IS--keep using a normal sane lobe not some stupid -may make another 5 HP computer designed crap lobe that requires giant spring pressure

and...to help prevent "skidding" we have always bead blasted roller lobes adding a "tooth" to them --after tear down it always looks better on the ramps after this easy cheap band-aid
before we did this ramps would show "skidding" This is in circle track applications---it can't hurt IMO