Changing out coolant bleeder o rings

[Ckrikos]

I recently had my coolant boil over due to a bad thermo stat and probable air buble in the lines. I had just gotten the fluid changed. Anyway now that the boxster is running well I get some condensation in the trunk and under the plastic piece in the coolant fill area. I tried changing out the cap to my old .01 cap that worked fine and I still get the condensation. So I am assuming its coming from the bleeder valve. Do you guys recommend changing out the o rings or just leaving it alone since its just a small amount of coolant loss.