Hi I have my own mini bong that i bought with my own money from a friend but the problem is I have 2 slides of my own that won't fit down the female piece and they measure on the bottom where the smoke comes out 3/8's of an inch. I need a slide thats small enough to fit in the mini bong. I stuck a pencil down the female piece and it feels like the width of a pencil for a slide would work. If someone could help me i'd appreciate it