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Which Light Monkey? There are 3 versions. Balanced and unbalanced with the bolt and the tinkle with a knob.
I don't like the bolt, had one on my last suit. You need to store it (so you can close the hole in case of a problem). Dead simple.
Current suit has the Trigon. It leaked. I glued the inner check valve down and added an inline balancing check valve. then found it was recalled so they sent a new balancing check valve and housing. It leaked worse than the original design. Never heard back from Sitech when I complained. Put my old glued together and external balance valve on and been running it that way.
Next suit will be a tinkle valve.