Time to change Headend

So Im printing out trophies for a competition comming up soon

the main trophies are made out of PLs silk and I started noticing that it could not extrude normaly and clogged up more and more frequently. (I have had this printer for maybe 1 year and never changed the 4mm headend that is pre-installed in the printer.

I noticed that it had problems with the PLA - Silk (generic) and decided to halt the printing of the trophies and start the other ones (generic PLA) and no problem there.

i did finnish the print of the extra ones and started the printing of the mini figures all competitors get and after printing some it started clogging and had problems extruding normaly again.

is it time to buy a new heatend and should I get the 4mm stainless steel or 4mm hardened steel?

(I have tried unclogging it over and over again but allways seems to be clogging up again)