[TowerTalk] zapped with my dipole. OUCH!

[K2VI]

It seems every time there's distant lightning and i go to disconnect the dipole i get this nasty discharge when i touch the pl-259. Im concerned it will eventually damage my tuner and or radio. The antenna is not dc grounded like my beam or vertical are. It is a ladder line fed antenna terminating into a 4:1 balun outside the shack and a 3' run of rg8 coax to the tuner. How can i bleed this static off? I heard from a ham friend the jump a 2.5 MH RF choke between the two terminals of the 4:1 balun where the ladder line connects.Any advice would be greatly apreciated.73
tony k2vi