I ride goofy, but can only ollie regular!?

ok so my normal stance is goofy, when i ride goofy i can only do nollie tricks. but sometimes i try to ride regular and i can do an ollie. the problem is it is extremely hard for me to ride regular( i feel like im about to fall of) and i cant do ollies when i ride normally(goofy) because for some reason my back leg wont push my board down enough for me to even go in the air( it kinda feels like my front foot is heavier than my back). pleasepleaseplease can anyone tell me what to do! or how to get better at skating regular or how i can make my feet be able to pop my board when i skate goofy! thankyou!