Looking for some opinions on 2 points of wear on the 7.

1. I am getting some wear on the muffler spring tabs. The tension of the stock springs are causing the holes to 'ovalize' as the springs essentially work their way through the tabs very slowly.

2. Similarly, on the tailwheel tabs. The tailwheel spring clips are very slowly working on the holes in the rudder's horns. Though much less than mufflers. I have my springs very slightly slack when centered so there is no constant tension on the tabs.

Any tricks to halt the wear short of waiting until new tabs have to be welded on?