Brett H, your slipping man……… I went over the ButterFly Spacer RIGHT HERE scroll down just about a month ago. 
You need a couple don’t you? Two Cometa’s IIRC?? PM me your mailing address and I’ll get them headed your way…… down to the land of the invasive Burmese Python , among other things.
They will be the correct size for the LED footprint though… 3.45 x 3.45 mm [ XPL HI ]
edit: Oh yeah, your about right on the Z1 price from AliExpress. I got one of each flavor from BG that just got delivered today. Price for the two was $103.53 with a ‘code’.
They are a whole different animal than the Cometa knockoff too let me tell you…
Right out of the box that was obvious, and it only got better. :+1: