I'm searching for a manually adjustable drive belt tensioner for a Barra to replace the crappy stock automatic tensioner. I've been told they are available, but the person who told me doesn't know the brand. I couldn't get an answer via Google either.

I have a Barra turbo in my Maverick, and the belt tends to slip when wet/ dirty/ muddy,etc which isn't ideal when offroad.

Any help would be great.