There are different pumps for the different hardeners, some are 3:1 and some are 2:1, were those set up for the 207 Hardener?
For West System, "These pumps are calibrated to deliver the proper working ratio with one full pump stroke of resin for each one full pump stroke of hardener. 105/205-206 pumps deliver approximate 0.8 fl oz of resin/hardener with one full stroke of each pump. 105/207-209 pumps deliver approximately 0.9 fl oz of resin/hardener with one full stroke of each pump."
Does your hardener pump match up?
This is just a parts diagram but it should help.
Leave enough play so parts swivel freely but not so tight that they bind. The plastic washers aka bushings help with that slight friction fit. Yo can use small pieces of blue tape to hold the big bushing in place while you slide the cheek (metal block) over the rudder blade to maintain bolt hole alignment, then an awl or other pokey tool to get the washer aligned.