Anyone out here have a permanent tire boot fix. I have some tires with slits cut by glass etc and don't want to throw em away as the rest of the tread is good. The slits are small, like about 3-5mm long. Who has the best permanent fix for them? I've tried cutting out ovals from duct tape but they get wrinkles and aren't permanent. Also tried glueing on tire patches to the inside of the tire but they don't stick. Thanks, Gerry