I'm finding that the socks are not the greatest solution either. I used to use fire blanket wool and kapton which although messy to install would last for a long time. It could not fall off the nozzle at all. I'm finding that the sock slips down a bit no matter how far in the nozzle is to the heatbreak. It has started to rip at the nozzle but I'm not fussed. it is advertised as disposable and has a price to reflect that.