Cheetah troubles

I bought a used Cheetah from a member on here --no problems there.

But the thing acts as if there is not enough throw. At this time, it won't go into park far enough to engage the NSS, and also barely makes it all the way back to 3rd (reverse pattern.)

The lever is tight on the trans shaft. I doubt the trans shaft has play, because the BM Pro-stick worked just fine

There is plus/ minus ? 1/8"? play "fore-aft" with the handle, which also moves the cable, that is, maybe, 3/16--1/4" ? of total play fore/ aft

Do these cables stretch/ wear out? I DO HAVE the cable anchored admittedly temporary, as the shifter is (securely) clamped to a piece of steel. That is, the shifter body does not move. Cable clamps are tight at both ends, cable jacket does not move.

I assume? the SUPPLIED shift lever is the same for 904/ 727? (Mine is 727, manual VB)

The cable goes down through the original console hole, makes one turn under the trans and back to the clamp bracket. Until I get the shifter "permanent" the cable jacket is tied up to the crossmember with several wraps of insulated wire. It is fairly tight, there.

Now I do have TWO Cheetahs, both used. I could try the other cable, and even the other shifter. I can't see a thing wrong with the shifter itself.