Block mounted tensioner / spring loaded tensioner / sprocket guard

I recently finished my build, and during multiple hard rides with the stock motovox tensioner my chain would come off (happens while doing burnouts smoking the back tire). It eventually made 1 of the #35 links twist & break off.

I decided against adding a spring loaded tensioner at the stock area & grinded it off / primed area for paint. I purchased a sprocket guard, and block mounted tensioner to remedy the chain jumping off during burnouts / adjusted engine as well.

Anyone have experience with the engine mounted tensioner or sprocket guards? I’ve used the sprocket guard previously with success, but never used the block mounted tensioner (i heard a lot of good stuff about them).

Thanks for any insight IMG_9604.jpeg IMG_9606.png IMG_9607.png IMG_9605.png