$$$ toward RMM is an awesome giveaway! I think I’ll enter! 
So I’ll mention my DIY triple spacer mod I coincidentally posted here TWO YEARS AGO TODAY! :partying_face:
Using a 3/4” brass PEX plug from Lowes, I was able to successfully make spacers for my triple builds. This has worked very well, as I have built three triples using this same $2.19 plumbing piece:
1. A triple 2.8A regulated high-CRI Nichia 219b in a Convoy S2
2. A triple 2.8A regulated XM-L2 in a Convoy S3
3. A triple FET-Driven XP-L HI in a Convoy S6
…and they have all worked great using this technique.
…via Convenient budget spacer for Triple EDC found... @ Lowe's!