funny thing, the one on my '93 80 series had just started leaking and was replaced, then this one starts getting bad. definitely one of the easiest repairs you can do: mark the location (orientation?) of the distributor, pull the cap off (2x screws), note the angle of the rotor, remove the single 12mm bolt holding the distributor down and pull it own. took all of 20 minutes and that was including cleaning it up. the old ring was barely rubber any more and definitely not round...