Wondering if someone can let me know what the sizes on the BB kits are like. Most dolls are listed as 20 inches, are the heads proportionate? I am thinking of trying some but am wondering about the heads, are they much bigger than the 17 inch Secrist Heads? I found that when i put my Taffy and Zoe together that i felt the cloth body was to large for the head size, any one else think this?