You gotta do what you gotta do lol
Why was it sliding off?
Are you using the red locktite for your set screws ?
Just don't use to much, I had one **** of a time trying to get the screws out... After a couple twisted Allen wrenches I had to used FIRE to break the locktite
I bought a 28 t sprocket from USA bearings and belts, with two set screws.
And I see you have a couple of stiff links? Mine did the same, even though it was properly lubed... The supplied chain is kinda of sucky, I spent a lil more money and a better quality # 35 chain that's a bit thicker