Just bought a used gantry router. It's a custome made machine, but appears very well designed and is very chunky. It's basically a 3040 on steriods. (i'll stick some pics up later...)

Now it's in situ, what checks should I do, no make sure its all square and hasn't suffered any issues from transit?

Tramming and retrun to zero in each axis comes to mind.

Is it worth disconnecting the axis drive belts to make sure there are no tight spots?