I went thru various leak problems, 0-ring crimps, cable questions, right-angle reverse gear leaks, speedo jumping, odo sticking I finally gave up after second speedo replacement and complete cable and gear replacements and went with a Smiths electronic speedo, works perfect, rock steady, no problems now. A plug from Std Transmission & Gear has finally stopped any and all leaks from the mechanical speedo port on my TKO600
