Obrigado, thanks.
ya, your low is lower than mine, but you certainly are a masher at 45 rpm compared to me. Your maintenance and not riding in mud all the time probably just means that you unfortunately need a higher quality hub and free hub for your weight and power-but completely out of my experience.
I hope you can find an option that lasts and isnt super expensive. Tricky now with bike parts in short supply anyway due to covid.
I can say from experience that higher quality hubs stay in good condition longer, and tandem stuff is certainly designed for more weight. Good luck.