No downside, but that is a spring loaded device. I would suspect a lifter is causing your ticking noise. Chain is short and doesn't stretch much. I've got 190K on mine and it's still quiet, even after having the head cut 12 thousandths.
2000 Dodge Grand Caravan SE
No matter what you fix, there will always be something else to fix..
"Warranty" is just another way of postponing the inevitable.