Greetings everyone. Last time I had a problem with removing a lockring which was taken care easily with a better tool. This time I'm having a cog removal problem on a different wheel. This is a Weinmann SP17 w/ formula hub and a unbranded cog which looks very much like the cogs that come with stock Kilo TT bikes. I've removed the lockring after some effort but now the cog is pretty much 'glued' to the hub. There seems to be some sort of lube the previous owner applied on the threading before screwing on the cog (I found lube all over the lockring and on the lockring threading after I finally got it off and believe me this substance honestly felt like a weak form of glue.) I've also considered if the threading might have stripped but I would highly doubt it as this wheel is still relatively new. I've tried using a blow dryer and perhaps try to 'melt' the lube a bit before attempting to remove it but it didnt really work. Any good tips to remove this cog from the wheel? Thanks in advance.