Both my MTD Trailflight and Sportstyl Alley Kat had the throttle cables replaced. Unfortunately they were butchered when put on. My question is I see ones on OldMiniBikes at 53 inches long and ones for specific brands at various lengths. What is the correct length for both my MTD and Alley Kat??? Do I just buy the 53 inch one and cut it down to fit like previously done??? Thanks