Can anyone help with this; One of the rear tyres on my Zed is losing pressure so I took it in to my tyre shop and they dunked the wheel in a tank of water because there was no sign of a puncture and we wondered if it was leaking from the rims. However upon putting it in we could see a very small air leak from one of the split rim nuts on the inside of the wheel. The wheels are the five star schnitzer type II racing alloys. It has got the nuts and bolts that go all around the rim and in this circle of nuts and bolts behind each spoke there is what looks like a captive bolt with a torx nut on it and it is one of these that has the small air leak. Can I simply attempt to undo this and put some silicone or something behind it and torque it back up, while the tyre is deflated, leave it overnight and torque the nut back up, or as I am suspecting, is it not as simple, can someone on here please advise. I hope explanation is adequate.