ive been carving a couple months now and having a blast.i decided to upgrade my b machine z truck assemble with carve tight assembly.also had to fix a rolled sandpaper traction belt,when fixing the belt i found the part called the blow port deflecter,number 55, under sandpaper belts .ive looked in the expanded parts service diagram -- head assemembly top (asm4)--but cant really figure out where it goes.anybody have a picture or can help.thanks mike