TB DRUM INSTRUCTIONS 217 insert (287 & 327) To assemble drum carrier the 3/8” B.1”x 1" x 28" insert (367 & 40™) washer should be placed on the bolt of C. Bottom Frame of Drum the knob. Then screw the knob into insert threads. (Picture Below) , C, and either insert A or insert B depending on size of Drum then tighten both set resews on frame C. Put drum on carrier with 5/16™ bolts .