Just been to the scrap metal place and they had some stainless steel tubing of the right size.
Three tubes costed me $30 and three bolts plus nuts and washers $2.70.
cutting the squares out of the tubes was the hardest and then drilling the holes, but all in all for $32.70 it doesn't look bad.
So anyone who needs legs for their mount , goto the scrap joint.
The tubes are 54.3mm by 890mm and can hold a lot of weight.