I'm having the hardest time learning how to slide instead of planting my left foot at the foul line. MY game has got worse since learning to slide. Everybody keeps telling me to stick with it but i'm ready to go back to planting because it feels more natural for me, plus I bowl better. I also have problems with getting down at the foul line because i'm tall (6'5) and my left knee hurts if I go too low. I'm trying to work on staying taller thur out the shot but it just feels weird. Any suggestions or tips would greatly be appreciated? Thank you in advance..