Its funny this comes up every so often. For years now ive been using the Beck/SM solids in both the std and leightweight version.

Even there heavy one is lighter then most anything offered.

On cams under .650 lift I can use modest (far less then a roller needs) springs, good quality rockers and pushrods and run to the chipped 7600 limit, one set is on the 5th cam, testing/dyno now in a car so that makes the cost worth it imo vs comps pig heavy edms thay call lightweight.

I do have one motor with the comp edms, never broke the cam in as by the book, just used rot. one can of old stp and I use a hp spring in the pump with the thoughts the edms will oil more at idle????

Never an issue if the lifter will spin in the bore, if the lifter is tight, try a different hole, if its the hole hone it.

When I was younger and took blocks to one of the better shops I used they always wanted the lifters and the pistons I was going to use, each time the block came back with a small cross hatch pattern in the lifter bores

Who knows.