I am having a problem with the down shift cable. It appears that the "arm" that attaches the cable to the transmission is sticking in various positions. the first symptom is "lighter" pressure needed on the accelerator pedal. I pulled off the cover on the side of the fuel pump cable cotrol box and could see that the downshift cable was indeed sticking. At the transmission end I sprayed wd-40 where the "arm" enters the transmission, but that fix lasted a week or so. Any thoughts?