Lokar cable sticking

a few months ago I replaced the transmission mount in my duster
Ever since then, the 727 does not seem to want to do a 2-3 shift
It will grab 3rd when cold, but once everything warms up, it will not upshift when cruising (it will under WOT)

I went to look at it today, and noticed after I get off the gas, the lokar kick down cable does not fully return

Can i just put a lit spring on the kickdown lever on the transmission?