I've rode summits most of my life until I switched over to my 2013 pro rmk last year.. im still learning how to work on these clutches, and could use help with the secondary.. first do I need a compressor to change the helix?? or it only needed to swap springs? second why with the team rapid reaction secondary it there 3 numbers for angles? just from looking at the exploded view of the clutch I only see 2 rollers, and im guessing that the last number is a different angle you can change to by rotating the helix 90 degrees.. is this assumption correct?? also im running in low elevation 0-3000ft..what angles are people having good luck with?