New rack
Reply #12 –
Supposedly, one pump is spec'd for the 15:1 rack and the current one you have is spec'd for the slower ratio rack. I have no idea what the actual mechanical differences are. There have been several guys on here use their stock pump with the 15:1 rack and they seem to get by fine.
My pump leaked anyway, so I changed everything all at once. Therefore I cannot confirm this myself...I just know the 15:1 upgrade is a good one!