there is also a o-ring type seal inside the distributor that can be replaced taking the distributor apart. This leak is usually at the same place the distribtuor o-ring leaks at and if you open the cap and rotor and see oil residual, that seal is leaking. Alot of people miss this seal and usually suspect the distributor o-ring leaking. Some some helpful info for you and your leaks.

I really wish I could do side jobs I would be all over helping you out and for a cheap price. g/l though.