If you have additional information (ex: specificity of piloting, various characteristics...) on the hang glider Sensor 510 by Seedwings (Usa), you can supplement his card by adding your comment or write to us :
I bought what I was told the second 510 built. When would that have been?
19/09/2023
I have a digital copy of the September-October 1983 Whole Air magazine in my computer, and there is an ad of Seedwings for the 510-165. There most be something wrong with your dates.