Welcome to THR.
FYI, here's an indexed listing of SPP/Pro 6000 troubleshooting and solutions -
https://www.thehighroad.org/index.p...-oal-consistency.911743/page-18#post-12564292
FYI, here's "best practices" guide to set up SPP/Pro 6000 press for more reliable operation -
https://www.thehighroad.org/index.p...x-pack-pro-pro-6000-kit.913577/#post-12564288
Just to make sure, check the shellplate and make sure it is tight as loose shellplate can prevent primer guide entering station #2 fully.
Next, raise the shellplate carrier so bottom of priming pin is free. As you can see from picture below, top of priming pin should be slightly below flush to not snag primer guide from entering station #2.
If top of priming pin sticks above, there may be powder/debri in the priming pin hole or bottom of carrier cover. Tap on the bottom of priming pin quickly several times to see if this will allow the top of priming pin to drop down slightly below flush (Picture below shows bottom of priming pin without the bottom carrier cover)
Once top of priming pin drops down slightly below flush, cycle the ram to see if primer guide enters station #2 fully. (If priming pin does not drop down fully, you may need to disassemble the carrier covers to check.
Refer to "Press Disassembly and Reassembly" for my step-by-step and Lee Precision's instructions)
Picture below shows early production black primer slider on the left with black hold down cover that's not needed for current longer gray primer slider on the right. Powder/debri could prevent primer slider from sliding freely.
Notice the round hole by primer chute opening and four rectangle holes under the hold down tabs that are meant to clear powder/debri from the primer slider channel/trough.
Cycle the ram to see if primer slider moves freely without hesitation. If you have the early production black slider, note that spring end has larger round end (See above and below pictures for size comparison) that could snag on the four tabs of primer slider channel/trough (Current longer gray primer slider comes with smaller spring end). If snag/hesitation is caused by spring end hitting the tabs, use a plier to squeeze the end smaller to prevent contacting the tabs.
Early production black primer slider showing larger spring end
I hope these helped and welcome to THR again.