Knex K-38 Crossbow

Behold, the K-38 Crossbow!!! Once upon a time, I had this crossbow and kept shooting it and it kept breaking my red connectors. I tried a variety of bullets but none of them worked. Then, I changed the trigger mechanism a little, and it worked great. It pierces a cardboard really good using 2 strings of 3 of #64 rubberbands. Should I post?