Well, I'll start off. And then Mick you can pickup, from where I leave off. I'll start Joe with the last question there which won't surprise you to hear me say that we have a very high level of conviction. We've thrown a lot at Rochester all at once. There's a lot of moving parts, right, with between the crusher configuration, introducing HPGR. Obviously, we're dealing with a very mature leach pad out there, in that Stage IV. We're putting a lot of solution into a Merrill-Crowe plant out there. And so going through and optimizing all of those things, here in 2020 is -- can be a little painful at times. But it's very worthwhile, right, as we think about fine-tuning and dialing it in, before we invest a lot of capital. And then have two HPGR units, at the end of this expansion. And when you go back and think about -- we put in one HPGR unit, late last year, for precisely this reason, right, which is to have a year or two of run time with it. So that we can get comfortable with it, understand it, from the mine through the leach pad. And then that's the process that, we're kind of systematically working through right now. And I think it's nice that, we'll have this Investor Day, in December. We can provide everybody with an update. But if things continue as we see them. And as we plan, second half of the year versus first half of the year out there, gold production should be kind of a double, second half versus first half. Silver should be up 40% or 50% over the first half. So it's happening. These commissioning things with the inter-lift liner strategy is typical and we've only been doing that now for two or three months, but I think we're getting those -- that debugged as well. So Mick I don't know, if I've left anything for you to cover. But ...