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You are right, I am pouring too much into this frame but I weigh 275 which is way too much for the nice bikes and so I look elsewhere. I am 56 and retired and don't plan to race, nor really tour. I get out, I ride and I work on bikes, most of them go to donations so someone else gets to ride my work. Eighteen months ago when I got into this, I had changed one (1) tire in my life and frankly if a bike need work I paid someone whatever they asked to fix it or I just threw it out.
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Good work overall and especially the learning! I certainly know about throwing time and $$ at a project ...down the rabbit hole I go
But really don't limit yourself from nice bikes because of your weight. The beauty of C&V steel bikes with 32 hole or more spoke wheels, is that they work great bof big guys.
I road my miyata 1400 at 280 or so
Down a bit to 255 and ride a de rosa and team miyata (and a couple of more)
Enjoy this one, and start a fund for the next nice one