First, welcome to the board. I'm new here myself but have found that I'm already hooked. Are you drinking plenty of water BEFORE you ride? Some people forget that we should pre-hydrate before a ride as well. If we wait until we're already riding sometimes it's too late. Also, depending on how hot it really is (it's 104 here today with high humidity), I can go through 2 water bottles per hour on my rides.