My body fat is around 12 according to visual charts maybe a bit less. I'm using the 1 and 5/8 23g. On the second try I didn't go all the way, that must be why. Thanks for the tip. I warmed oil for the first time last night, quite a difference. Not sure I'm ready for the quad lol especially with how active I am at work. If it locked up on me I'd be in trouble