+1 Once you get them in right, don't tighten it as far as you can. You need to adjust the bb, to get the proper setting. The way I do it is I get it close to right, just a tad loose. I then install the driveside crank only (leave the non-driveside off). I spin the crankset (no chain), and see if it wiggles. Typically, there will be a little play between the crank arm and the downtube (squeeze it). Then adjust the adjustable cup as necessary. That takes TWO wrenches, a lock ring wrench and a cup tool. I adjust the cup until the play is gone, then hold the cup in place while I tighten the lock ring.