Hi there. I've got an 07 gasgas 280txt pro with the 40mm marzocci forks and I'm struggling to get the cartridge apart. I've got a pin spanner tool to turn the reboot cap but I can't seem to remove it. I can raise it enough to expose two hex nuts on the shift. 19mm and a thin 15mm nut, but I can't separate then. It feels like I'm going to break something. Any tips on how to disassemble? Thanks