The Uni with the foam outer is absolutely a piece of garbage. I had one and ended up sucking a piece of that foam surround into my carbs. A few pieces. Took me 2 cans of straight pouring seafoam in while holding it at 3k to get it to finally pop a little amd blow some smoke. Enough to take it for a ride. I poured way to much into my tank, plus octane boost and premium gas and took it for a beat session to try and clear the rest. Finally starting popping and spitting before I got on highway and cleaned up. Had it almost at redline in 4th for a solid 15min up to the beach. I can’t fix carbs and wasn’t putting my bike down early in the season for carb work. So I did what worked for me. Garbage those filters are