If you compress the tip before installing, trim the tip completely level and symmetrical with the ferrules, mine being ivory I previously mentioned require extra caution because of where I live, the tip does not mushroom quickly requiring trimming. I have two tips he installed that could be trimmed but really do not require it. Until I notice in my sight picture the tip looks off and needs to be trimmed, I don’t bother with doing it. If I feel it when applying chalk, well, I’ve never waited that long to trim a tip so that would signify my mental alertness is really diminishing fast.