I've gotten Dad's 29 tudor out that has been sitting for the last 3 years. I've changed all the fluids and greased everything to start driving it. I've mastered double clutching to go up through the gears, but cannot downshift for the live of me. I try double clutching, and also feather the throttle and cannot get it to go from 3rd to 2nd until I'm almost stopped. What am I doing wrong? I am running the 600w oil in the ****** from mikes afordable. Thanks.