Replacement Cooling Block for Micro Swiss All Metal Hotend Kit for CR-6 SE

I'm new to 3d printing. I have a creality cr10 smart, bought used. I upgraded to this hot end because at some point, I want to print other material than pla. Currently, I'm having an issue of clogging when I change filament. I didn't have this problem with the stock hotend, but I'm also pretty new to this. It's hard to know if it's me or the hot end. Aside from that, I purchased the high temp block and titanium heat break to go to 500C. All in all, it works well. Only issue is what I mentioned earlier.

Quality product...all metal and no problems with fitting and now i have found the brass compression sleeves that came with this hotend i ordered the extruder too! It keeps that PTFE tube in place and much easier to use than the original setup. I was thinking of modding mine to use them then the xmas sale so i had to get the extruder.