I'm getting ready to make a purchase on a Lauf Seigla and looking at sizing. All measurements point toward a small frame, but when looking at geometry, my current bike stack to handlebar measurement is bigger than their XL. Current bike is based on Retul fit measurements (fitter is a bad listener, but followed the Retul system so maybe not bad data). I'd have to really really build up the stem to get to my current measurement, and had a thought that going up to a medium would reduce some of that need. Asked Lauf and they say stick with small. I know Lauf states it has a more aerodynamic/race geometry, but why am I so far off and need so much buildup? Or maybe the overall geometry will reveal a different fit?? The goal for this bike is to do unbound 100 and then settle into more bike packing adventures, so the race fit isn't high priority but comfort on long gravel days is. Wanted Lauf because the price point is so good. Any other bike so far increases price and weight significantly. Thoughts?

In middle duration efforts 5-20 minutes, I’m curious to hear what typically gives our first for you all, legs or lungs? I find my legs starting to complain while my breathing is still very under control. Wondering if this may be a fueling problem? Thanks in advance!