Very Sorry for your Dads passing. My dad was my inspiration to always being tinkering with mechanical things. Although he didnt have any racing in him he got me started riding and racing motorcycles, which ended up being my lifes passion. My parents are both long gone, but my wifes parents recently passed. Both died within two years and it was hard on her so I/we know what your going thru. Life goes on, so will you. Eventually the pain fades to the great memories and the ones of your Dad will make you enjoy racing maybe even more.