Coolant Leak Issue, Need Help

My 87 Ramcharger leaks between the timing cover and blockon the drivers side. It has for several years. There are rust pits on the block where the gasget matches the two together. The pits are small, but let the truck sit a while and it will leave a tiny puddle. Once a year, i have to go into it and change cover gasgets. One day, ill change the motor, but for now it runs too void to mess with it for a tiny leak.