But I also would not like to blame everything on product, but both my wife and I have great difficulty. The "R & ueckfederkraft" is apparently not strong enough to hold the once "packed" screw so that they tatsaelich silent h in "Search" the screw with the Fork & the Elder. Also seems to me that - to the rounding of the "Cross-shape" to the market, average Schneckgroessen better adapted k emitting units - even more important than the spring force.