Hello
I don't know if is stupid to think about that idea..but I am pretty happy with my whs40..is good for small soldering works..but the stick is almos gone..the screw that tightend up the tip is gone, as the connector (crappy as fu**) so I am thinking to get a jbc stick (I can take one for 30/40 euros, against the 90!! For the original stick) and direct solder the wires of the stick on the pcb
I think that it should be fine, that can be an idea?
Edit: or find a 4 poles connetor to fix on the case of the soldering station