The left hand trapeze side bar of my newly aquired 1970ish Hobi 14 is showing signs of imminent breakage. The aluminium has gradually rotted around an old rivet hole, and worked its way around the diameter of the section. I am worried my weight (110Kg) will soon cause it to break. My Question is, Can I have someone Weld a patch to the area (I'm sure I must have a specialist aluminium welder in my area) or is it better to replace the whole section (assuming they are available) Will welding a repair cause the section to loose its integrity. (i.e. will the metal go soft, or brittle etc). Or is it a major engineering feat to replace the side bar. Any advice from others who may have had the same dillema will be most welcome.