I'm 6'4" and I believe about a 86cm inseam. I just started riding this bike and it feels like I just can't get comfortable on it for rides over 10miles. Either my neck starts hurting or my hands. I had it fit, Should I just take it back and get it fit again? Is this a no brainer? I'm asking these questions as I'm curious what others have found on this bike. If there are any other topstone users that use the bike and can relate to the size of this bike. Does it run a bit large?