Triple E's were Canadian built. The Sunburst was an Aussie built awning. It is neither Carefree or Dometic. Back in the 70's and 80's there were about 6 or 7 RV awning makers. By the end of the 80's it had whittled down to 2---Dometic and Carefree. It is amazing that after almost 35 years the awning FABRIC is still in good repair. If so, then try to find a supplier. With the right costing over $200 plus shipping and the LEFT costing more than $175, (you may need both) it would be better to replace the complete awning with a manual Carefree or Dometic. A Manual complete Dometic would be about $700. Doug
https://www.aussietraveller.com.au/products/caravan-awnings/spare-parts/sunburst-caravan-awning-replacement-parts?p=2