Hi. I have a small IST light, innards modified by Packhorse (another SB member). It's a great light. My usual primary is a hand-mounted cannister light but the IST gives a good tight beam when I don't want to bring the can along.
Recently (over the last four months) the thing has become well-nigh impossible to turn on underwater.
It's a twist on/off design. I've cleaned the threads on the cap and body, and put silicone on the threads and on the o-rings lower down, but half the time in the water I have to give up trying to turn it on.
Can anyone suggest what the problem might be?
Thanks,
Bryan
Recently (over the last four months) the thing has become well-nigh impossible to turn on underwater.
It's a twist on/off design. I've cleaned the threads on the cap and body, and put silicone on the threads and on the o-rings lower down, but half the time in the water I have to give up trying to turn it on.
Can anyone suggest what the problem might be?
Thanks,
Bryan