Is a grip truly this important?
So I've been playing tennis for a while now with an old worn out grip, and had loads of trouble trying to serve with the continental grip, therefore I served using a eastern forehand grip and sometimes even a semi-western grip. Last week I got my grip changed, and added a Wilson Progrip on top of it, and today I tried serving continental and my flat first serves magically get pop on them. I never knew that a grip change would do so much for my tennis game. Now my question is, should I work on my first serve before developing a decent kick serve?