ARC Dual Heavy Cannon R&D possibly broken

trench216

I'm attempting to craft a set of ARC Tetryon DHC for one of my toons hoping to get the [Pen] modifier eventually. I've been at this for several days and while the VR units I spin out have the expected [Acc] [Arc] [Dmg] procs, all four of the VR units I've spun out have gotten an extra [Acc] proc. That seems a little more than coincidental, random chance should have given me another proc on those by now I would think, ANY other proc, not necessarily the [Pen] I'm looking for.

My question is: has anyone recently had a similar problem with the crafting system, and is it possible to get [Pen] at all on Ultra Rare ARC Dual Heavy Cannons? Thanks!

trench216

If you go on the PC Exchange right now, all the cheapies under ARC Tetryon DHC are mine. You should be able to see exactly what I mean.