Mine I only got to nip it up once every 6 months, but the shaft bolt stays tight, better than the stock kicker I had to tighten it up after a few kicks on the shaft, now that was annoying.
So yes mine does come lose slightly on the fold out bolt but not enough that it flops about, mine has been on the Norton for over 10 years now and it's so much better tucked away and no longer having a kicker in the back of my leg and having my right foot just on the edge of the foot peg, so the RGM T160 kicker is so much better than the original kicker by far on my bike and a lot easier to kick the Norton to life with the longer arm, was money well spent.
Ashley