Hey there, Quick Question, I'm building a new frame up and to get the right top tube length I had to buy the XL, the issue is that the seat tube is 23 inches, I normally ride a 21. How ever a titus 21 has way to short of a top tube, so my question is this, To get the saddle height right, there is very little seat post sticking out of the frame? Does this matter in any way? The stand over and top tube are fine, Will the lack of seat post sticking up cause any issues? Thanks!!