I'm riding weeknights on mys KK trainer with Carmichael or Spinervals DVDs for company. I'm not having any problem keeping up with the various programs, but I can't for the life of me stay out of the saddle for more than 10-15 sec. It feels incredibly awkward and blows my legs out in no time. I can ride out of the saddle on outdoor hill climbs when I need to just fine. What could I be doing wrong, or do others have this problem on trainers too? Is it possible my front wheel is too low (i.e. not "up" as it would be if I was climbing outdoors)?