i have a 07 rev shr860 i am running dj s8r helix with the stock purple secondary, 19/45 gears about 20.3 grams... last year it run good with a 151 track this spring put a 162 and it doesnt seem to be back shifting aswell ,,, not sure what primary spring i put in but will be pulling it apart to see what it is ... can some one give some pointers what to look for and how to set this