I finally managed to borrow a swage crimping tool to comply with SB #0018. My ovals were crimped to about 9.2mm and the service bulletin requires them to crimped to a maximum of 8.9mm. The four ovals are now crimped to about 8.73mm compiling with SB #0018. I will order some 19mm 6:1 heat shrink to cover the rudder cable connections. Reconnecting the rudder cables to the rudder pedals is going to be an interesting days work,