Posted 2/26/2008 22:14 (#320402 - in reply to #320003) Subject: RE: Axial flow shoe slow down kit
Pond Creek, Oklahoma
All 2388s after serial # 198068 have the slower shoe. Your 2188 would need the kit if it hasn't been installed. Part # is 303188A1. Don't know about differences in capacity, but most 21 owners slow down their shoe for longevity purposes.