The quarter drill isn't for everyone as with many coaching tips. and there's no way to know that it "WILL" make a bowler mechanical. How do you know for sure? is it proven?Just got to try it, and if it doesn't work, move on to something else that works. And yes, it starts with fundamentals.
Anyone can throw a punch, but a punch is wasted energy if doesn't start from the ground up. Anyone can roll a bowling ball.....