I have a 1985 dt-85 that was torn down to do the carb soak trick. Time passed and on reassembly there is what appears to be two brown vacumn lines on the l/h side of the motor. One is segmented and connects to the top of the head area and runs under the motor to the r/h side. the other is about 3" long and is connected to the bottom of the head assy. Any ideas where the other end goes. There are no easily recognizable connections. The book is very vague. Thanks for any help.