I would like to use the beehives, I have the Trend H-13 solid f/t with the edm hole in the face and they weigh 69-Gr. +/- and trend p-rods. Pac tells me NOT to use the Beehives with solid f/ts and Comp says its ok.? My only reason is is the huge weight savings of the beehive and Ti retainers/locks. Oh yeah, I have used my Trend tool steel lifters on 2 different cam grinds and am going to use them again as they look good as new. Should a person be afraid to do away with the dual spring to go to the light wt.Bee's?