hey everyone! thanks for all the help, especially KRJ. With my Lyman CasePrep Express I used the primer pocket reamer and uniformer a little more than i did prior to my first attempt.
Ease of seating primers is noticeably easier with the RCBS hand primer.
As for the broken Forster part, I emailed their customer service and they were extremely fast to respond. They will be replacing the part (no-questions-asked) and even gave me a few more recommendations.