It all depends on what you did:

re the title, "Fixed intermittent Odometer....", did you confine your resoldering to only the three solder connections of the motor that drives the odometer? [I've had to do this myself for a likewise intermittent odometer]
If so, I'd suspect that the first and most obvious possibility is that you simply failed to reconnect the wiring correctly when you reinstalled the cluster -- you didn't mess with anything else. There's little leeway for a mistake (the two main (semicircular and circular) plugs have orientation that's fixed, but you never know what can happen.

On the other hand, if you got carried away and started resoldering other connections all over the board, then there's no telling what happened. Maybe you overflowed a solder and caused a short, or maybe actually loosened a connection when the solder flowed?