My dydoes cause a problem with sex with tighter girls. They bend back on penetration. So because of that, they become sore. I'm wondering if shorter barbells would help with this?, if i should go with straight barbells, or stick with curved? I also wanna start stretching up to a 14ga for now, i'm currently still at the original size (16ga). Can i do this myself? And if so, do i need anything to help with inserting new barbells? I've never taken these out and put back in, so i don't know if they'll be as easy as my tongue is to put the jewelry in. Thanks.