Quoted from Pimp77:
So I've been having some odd air balls when shooting the left ramp...so much that the ball would bounce entirely OVER the ramp at times. I thought it was the ramp flap, so I spent some time adjusting that. Still happened. Thought it was catching the "O" lock button somehow and launching so I adjusted that so it sits lower and requires less pressure to depress. Still had air balls. So I looked closely at the entire ball path and noticed something odd...the flipper rubbers seemed to be sitting low on the flipper. I took a close look and they were seated fine, but they still didn't look right. I grabbed some new flipper rubber and compared. The stock flipper rubber is about an 1/8" SHORTER than a normal one. I have the pf protector installed as well, so couple that little bit of extra height with the 1/8" shorter flipper rubber you get air balls. I ripped that crap off all 3 flippers and replaced with regular ones. The whole game feels better now and no more air balls!!
I recommend every single Hobbit owner to do the same...replace the flipper rubbers!
I noticed that too so I replaced the rubber on mine. Right now I'm running PBL Super-Bands.