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Leaky cast iron steam radiator, sections are uneven
Now I realize this 100 year old medium sized cast iron radiator has been leaking steam (no water drip) between sections, which was the cause of the bubbling paint. As I place a straight edge on the top going horizontally and use levels, I can see some of the sections have dropped down. How to fix? The truss nuts were already loose. With the radiator standing, loosen the nuts up a bit more and carefully insert wooden wedges on the bottom sections and section by section tap the wedges until they lift the drooped section until they all are in alignment? Then tighten the truss nuts?