RepRap Prusa X End Motor Braces

My Reprap Prusa is still in it's early life stages. Amongst some of the problems I have had to solve one is the X end motor parts which are a little flimsy.

One problem that this created for me is that tightening the X carriage belt is difficult. The reason is that there is a fair amount of flex in the plastic part. I have read others who feel that the part has been stripped down a little too much and now is flimsy. Obviously you could create a new part with some more plastic in there to