clouserminnow:

IF you are good with tools, drills & taps:

You might want to keep a lookout for some old reels at flea markets or such and see if you can find one with a simple flat line guard. There are reels out there, (sorry I can't think of any brand names); that use a flat bow-tie shaped piece of steel or nickle silver that is screwed to the outside of the pillar where the wear occurs.

If you CAN'T find one that fits but you are good with tools you could fabricate one out of steel or even brass which is harder than aluminum; polish it with a Dremel so there are no sharp edges and mount it on your reel by drilling and tapping two holes to accommodate a 0-80 machine screw.

Obviously if this is out of your comfort level you can forget it but I have done similar repairs on reels in the past.