Creality Silicone Sock for Heater Block

fit correctly and stopped the fans cooling the block setting off the runaway thermals alarm. but one thing the hot end does sway in temperature to a greater degree now than with the original sock the variance is about an extra +-/3 degrees from original this does in fact tip just below the Filaments best use temps the upward swing is not as likely to exceed the top recommended example: rec 190-220 pla running at 200 hot end swings 192-208 instead of 195-205 the sock should be thermally insulating the hot end so the end stays pretty stable. I have not seen that with these.