FSR Mount for Rostock Mini

I designed and built different FSR "mounts" in order to be able to use FSR for automatic bed leveling with my Rostock Mini.
I came up with three designs of which I'm right now using the last one (V3).
Even if version V2 has a small heightening I could not really get the bare FSR trigger correctly.
I ended up using version V3 together with those small rubber feet you get with a lot of electronic devices (see picture)
Version V3 has holes to mechanically mount it to the printer but those b