cezary said..eppo said..Yeh I have 2011 ozone bars still working just fine.
Did you try new Ozone bar 2019 V4?
I did and have already holes to the bare metal on the both sides of the centre slot!??
According to Ozone it's my fault since I don't wind the lines correctly!
Mind you its almost brand new bar that
was used 20times at the most!
For more see kite forum. com

The damage on your bars is caused by the way you are winding up Cezary, then storing the bar in the bag pocket with the top of the chickenloop pressing on the bar grip. Over time its made holes in the foam. Thing is its just cosmetic, will not affect the longevity and could be repaired with some black silicone or stormsure. The bar itself is the same strong reliable design Ozone has used for over a decade.
This bar of mine has approx 70hrs of use, but I almost never store my bar in the bag and when I wind up my lines I make sure to leave enough slack in the mainline so the top of the chicken loop does not press on that part of the bar. (I've recently changed the flag out line at it was worn)
Bring it into the shop and compare it to the kite school bars, they have a couple of hundred hours use each and have none of this damage, but we already sent you photos of the school bars.