Nctong01 said:Hopefully this one is a little better.
Much better. First, the disclaimer. My judgments on fit are purely from my personal experience of about 10 years of racing, 20 more years of aggressive sport riding, and 2 years of sizing bikes to riders in a shop giving riders who ask for it advice while on group rides.
You look quite good. You look balanced over the bike, supporting your upper body using mainly the back and abdominal muscles. My only concern is for the hump in your lower back--while it lets you rotate your hips forward for more power now, it could hold you back and give you trouble in the future. Either that, or your hamstrings are just tight, or you're curling up to compensate for a stem that might be too short. Whatever the case, work on flattening out that hump though stretching and extending the back while riding.
Straightening the back will add one or two centimeters to your upper body length on the bike, and that will require a longer stem. It's funny, I've seen some riders automatically flatten their backs just through using a longer stem ore sliding the saddle back a centimeter. I'd try a one-centimeter longer stem and moving the saddle back just to maintain balance over the cranks. You might need more. Remember that at that stem angle a longer stem will raise the handlebar. Swap a spacer or flip the stem accordingly.
Your arms look fairly long so a slightly lower handlebar isn't out of the question. Your current position actually shows that your shoulders and neck are willing and able to handle a lower position than your lower back is giving you. Honor that. After straightening your back, lowering the bar a centimeter or two isn't going to radically change your reach because the increased rotation will be from the hips. I suggest experimentation according to your objectives, but not until you've learned to ride with a flat back.
Winter is a good time to back off a bit on the power training and work on form, so don't worry if there's a bit of drop-off in power while you're working on this.