Hi, need some advice. I bought some rubbers on ebay same as Item number 4400864301 but a bigger pack. Well they keep jumping, I didn't have this problem before, Is it that the rubbers may not be any good or is it me. The other thing is, should the rubber have Ungar written on it. I have noticed that Ettore and Purlex (think thats it) have their name written on it but these do not.
Thanks Paul