pin openings 43 provided in the feeder plate 38 adjacent to the plate slot 39 for purposes which will be hereinafter further described referring now to fig1 6 and 9 of the drawings the mud adjusting mechanism 45 is located at the exit or outlet one of the tape feeder slots 7 and the mud adjusting mechanism 45 is characterized by a feeder plate support bracket 46 shaped to define a pair of plate flanges 47 fitted with openings not illustrated for mounting the feeder plate support bracket 46 of the mud adjusting mechanism 45 to the bucket wall 4 above the exit or outlet one of the tape feeder slots 7 as illustrated a flat feeder plate 47a fitted with a plate slot 47b completes the feeder plate support bracket 46 mounting of the feeder plate support bracket 46 to the bucket 2 is normally accomplished by using a pair of bracket bolts 12 and corresponding nuts 13 as further illustrated but may be effected by pop rivets or other fastening techniques known to those skilled in the art a pair of openings not illustrated are provided in the plate flanges 47 for receiving a pair of corresponding wing nut bolts 53 that extend through.