Tirandus

Hi. I am new to Kerbal, and also this mod, but I managed to get it installed correctly (I think) and it looks great. There is just one thing that nags me a bit. all my rockets are enclosed in a shell (looks like there is a decoupler attached). The rockets work normally but i would just love to see the nozzle and stuff, and not just another fueltank. What setting am I missing or what have I done wrong?