Hello all. I'm getting into my 3 third build and I'm starting to want to advance my skills. One of the things I want to do is tune my engines. I've done a little reading on Gordon Jennings masterpiece but its not setting in my head as I hoped. Is there any other books you use or could recommend? also what tools would you recommend a person living in a one bedroom apartment? Lastly what first mods would you do to a China doll? I appreciate any advice given as I'm not new to motorized bicycles but I am new to tuning engines and advanced repairs.