Does anybody have the piece of metallic tubing, about 3 1/2" in diameter and about 4" long that fits on the heater box?? Then I can fir the bit of expanded tubing that goes from the blower to the heater box... One end seems to have three holes, about 120 degrees apart... (Seen on a BEat the park!!) TIA - Dave G '65 MKIII Sprite