Originally Posted by
charles1324
Thanks everyone for the replies. Honestly I find it hard to believe .2mm will make that much of a difference in this application. We're not talking about a machined surface here. I'm willing to bet if one was to measure the interior of the seat tube it would vary by way more than .2mm. Some guys even make shims out of beer cans and have no problems. No way is this area of the average bicycle that precise.
charlie
OK, try it your way and let us know how it works out. It's your bike and your seatpost.
However, as several of us have noted, seatposts are made in 0.2 mm increments for a reason and it's not because the manufacturers like to have a lot of stock numbers.