All 2836-2834-2832-2873-2846 etc use the same size hands. Perhaps the tower on one of your pinons is to tall or to short. The hand stack should be, hour hand, 24 hour hand, minute hand, sweep second. All of those movements use the day wheel portion of the movement to set the 24 hour hand. They simply remove the set triper for the day wheel, and replace it with a toothed wheel which controls the gear on the 24 hour hand. Very simple conversion. Ck all post heights on you movement to make sure they are correct. 24 hour gear on top of the hour gear, small space above that for your minute hand, then install your sweep second. You can do it, just be patient and ck everything before you start.