automatic 727 modified / shifting issue?

Thats all good amd looks nice if you want to spend 300.00 on a fancy cable set up that over time can gum up or dry out and the cable could snag or rust or even Frey . I'll stick to the factory linkage and adjust or modify it to funtion correcty and save some money . I fabercate anyway so no out of pocket expense. ive also heard of lokar cables burning up automatic transmissions ?