Hi I just so happen to find a 2013 ZX 636R with only 1 mile on it. So I bought it. It is my first motorcycle ever and I have already put 400 miles on it in 2 weeks. I think I am in love. I am having a problem with my hands going numb while riding after a few minutes friends are saying I am gripping it to tight. I don't think that's sounds advice....I don't want to fall off the motorcycle lol. What do you guys think?