Does anyone make an improved version of the throttle linkage between the firewall and the intake manifold? Here's the part that I'm talking about: I'm chasing sticky, non positive throttle action and have found that my throttle linkage is sloppy and worn at the plastic pivot up by the firewall: I know I could clean and lube it to fix the sticky part, but that won't do anything to fix the sloppy part. Are there aftermarket options out there or am I looking at a custom repair?