Make sure you swap the grub screws withe the ones that are included as replacements. The screws that are installed on the deck are tiny phillips head and do no tighten down thoroughly and you risk stripping the head, the replacement screws are hex heads and you can can get them nice and tight. When I had the PH heads in my ohms were jumping all over the place, for .28 to 1.0 which could lead to melting of PEEK insulator. Would have given it 5 stars if it would have included all hex screws and an allen wrench. Thankfully I had one that fit that some users may not have.