Try running Bertom Denoiser the first thing in your chain and use these settings to being with. If it's too aggressive, Raise the "Threshold" slider a little bit (the one on the very left side).
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Well that's that's the best 'denoiser'/gate I've used so far. .Retains all the reverb /delay tails, and completely cuts off all the noise of those wicked hi-gain captures, when used in conjuction with the Tonocracy gate. Tone doesn't suffer at all. I mean it's literally perfect. THANK YOU SO MUCH!!!