So after spending a couple of days modeling this tw*t of a shape in Solidworks and tweaking it to improve the strength in the area that normally fails around the spring, I've finally got a design that is almost finished. Just printing one now in PETG as PLA is like gold dust at the min (or if your prepared to pay 3 times the price) also PETG is stronger than PLA.   After spending so long on this, It's not likely ill be giving the design away for free on thiniverse I'm afraid, but anyone who is interested in having one I'd like to here how much would they pay for something like this as I'm still figuring out how much it's costing me. I plan on supplying the lower part with the clip & torsion spring and finished in a flocked coating. I Hope to reach a standard unmistakable as a factory part... But I need some time on that part yet.