Change out the phillips screws in your polarizing donuts for stainless steel cap head hex-drive screws.

The kit includes 4 cap head hex-drive screws and a T-Handle hex driver that allows you to loosen or tighten your polarizing adjustment just as much as you want with the lightest of touches.

Where the phillips head screws require pressure to be exerted on the screws in order to tighten or loosen them, knocking your adjustment out of whack, the hex-driver requires no forward pressure.

Place the end of the hex driver in the cap head screw and loosen each screw by a quarter turn. Your wave guide will turn silky smooth. When you tighten the screws after passing cross-pol, the donuts will stay where you set them.

$6.95 includes shipping in the U.S. lower 48