New to TGM - Extensor Action and PP#1

[JoeShmoe]

Guys

I am a 10 hcpper who has decided to try and make it to the next level in my game. With the season over I want to set myself some goals and get some good stuff to work on so ive been looking at TGM and trying to simplify it for myself on the range

What I have found is that by taking the club away by pushing down with my right thumbpad onto my left hand/thumb (PP#1) and ingraning the feeling that this move keeps my left arm straight and extended all the way to the top, I seem to be hitting the ball real well. What I want to check is that this is an acceptable move, using PP#1 purely to get the club to the top. I dont concisouly feel any motion with my right forearm for example, all I do is keep pushing down and feeling that extension whuilst manintaining my setup angles

Is this a good thing to work on? Will it get me into trouble later? Do I need to incorporate another move with my right forearm?

Many thanks