I emailed Lunsford yesterday and here's the reply I received from them -

Hi Harold,

We don't have a pin close to the size you need. Even if we had one,
1/8" titanium would still bend under that kind of stress. 1/8" drill
rod is the strongest material to use with those aluminum parts. You
will have to drill and tap for a set screw.

Really if FLM can make the arm and bulkhead, why not use at least a
4mm pin. Even that may be too small for a fast E-Maxx that jumps.

Sincerely,
Kelly Lunsford

mkrusedc, which set did you order, if you don't mind sharing the info, I'm curious?

I'm waiting on some drill rod I bought to make two sets of VBS Hinge pins for my UE Thunder and Lightning, but those don't use clips. I really don't want to drill and tap these hybrids for setscrews. I would like to try TI pins and see how they do.