Brute 750 question

I have a friend with a 2005 brute 750 and he said he is having trouble with the carbs. He said that it will back fire from like 10 mph to 0. He does alot of riding in canada and then back down south and has to change the jets out every time. He wanted to know what is the best way to fix this or best jet kit he could get for this bike and where to get it. Thanks

Sounds like a question for Scribner.

Get ahold of Thunder Products.They sell a kit that is adjustable for fuel flow externally.It works as the same idea as a power jet on a carb.

Thanks alot, i'll let him know.