I've got some green uns. the pauls 1s use a bolt with a hole vertically through it for the main brake vertical cable. its hollow & threaded, the bottle cage size bolt that threads into the main body pinches against the cable & holds it tight. should be able to replace the main hollow bolt with a old dia compe type bolt, fit a few tiny washers & a simple nut. tho it wont look as clean as the normal pauls 1s