Im with chirone...I keep mine at 0.001 or 0.0001 for the same reason. If they are too far apart snap them one onto the other...or scale tool works as well..then have a go at it. If you change the tolerance...change it back LOL otherwise a cube becomes a point LOL...Ive done it
cheers bullet
bullet1968
"A Darkness at Sethanon", a book I aspire to model some of the charcters and scenes