QwtLegend size

I have an array of plots ,arranged vertically , with(QwtLegend) legend on the right on each plot, I synced the xBottom scale on all the plots, now I come across some problem when i have many items in one of my legend, the legend added the scroll bar which make sense , but then this in effect will mis allign my xBottom scale.

I am looking for some suggestion on how can i overcome this issue that i have. Uwe can you give me some pointers on where i can control this behaviour..

baray98