Tuning Those impacts black rubber balls....

... in front of the cocking block. One comes on the cocking latch side from the factory., but their is a second hole on the opposite side of the block for what seems to be for another ball. I went ahead and popped a second one in and now that cocking latch snaps shut with authority now. Seems like it should’ve came with both balls attached it’s so much better. I believe this is an age old subject matter because it seems to me I read a tread somewhere where black rubber balls an impacts were being discussed but I was impact ignorant back then. So, where there any downsides to installing a second one?
 
I have gone through three cocking blocks because of the pin breaking or wear on the linkage causing the pin to break. FX has since beefed up the pin diameter so there is no worries there. The blocks all have had one rubber ball in them, and since they are only in there to essentially keep it from rattling and opening, it would be best to use only one.