727 Kickdown Linkage Adjustment - HELP!

I made this rod adjuster from a Lowes stores turnbuckle. It works well for fine tuning but of course wouldn't be correct looking for someone wanting the factory look. I was able to dial in my 1-2nd and 2nd-3rd shifts alittle bit later for light throttle. More like 15mph instead of 10mph 1-2 and shifts are firmer now too due to the higher rpms.