I'm rebuilding my Sram Grip**** 400, I can't get the shifter to twist properly. I can rotate the shifter clockwise fine, but I can't seem to get it to shift counter-clock wise. I can only install the spring in one direction so I'm not sure what I'm doing wrong I'm replacing my cable and housing, and the shifter worked fine before I disassembled it. I realize there is on grease, I wanted the pictures to look good and adding grease didn't help. Any help would be appreciated.
When assembling a grip shifter, I prefer to sit the spring in the base of the shifter ( the opposite piece from your photo) and VERY GENTLY 'shake' the two pieces together with the cable fitted. Normally the shifter doesn't feel right till I have it attached to the bars with the cable under tension. A bit of trial and error will get it sitting properly. I have broken one of these before by being forceful and impatient, so be careful!