SPARK PLUG WIRES- Your suggestions sought

What are you guys running..?

I have a 383 big block in my '68 Dart with MSD setup ( 6AL, Pro Billet Dist, Blaster II Coil and 8.5 mm MSD wires) along with Schumacher Tri-Y headers.

I find that the MSD wires and their multi-angle connectors are a bit fragile.

Been on my daily driver for 3 years now, and I'm having problems with spark flashing from the connector to the header tube at cylinder #6 and #7../