At 11.8 FT.lbs, Darren, it's a bit too close for comfort.
What pellets are you using?
If you were using 8.44 gr pellets, just 7 feet per second will have you at 12.0.
Now, you can make the '80 much sweeter, depending on how far you want to go.
The '80, at 30mm bore, has a pretty hefty piston. If you reduced piston weight that would help. And if you were to reduce the stroke, that would also help.
However, if you generally like it the way it is, and just want to make it a little more refined, I'd be stripping it. Degrease, de-burr and polish. Fit a top hat. If the standard guide is a snug fit on the spring, you could stick with that. If not, an aftermarket guide that fits your spring nicely will help quieten things down. If there's room and if there isn't one already fitted, a piston sleeve will also help towards refining the firing cycle.
Then I'd be removing or collapsing a coil from the spring to get the power down. If keeping the piston weight and stroke standard, this may make the firing cycle feel a little lazier. But many prefer them like that anyway and the result will be a more refined shooting rifle that's safely below the limit.
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