If you've dislodged a ball you'll probably find that the PV arm will not sit where its meant to. I haven't experienced it though so not 100% sure.
Get some nice thick gasket paper and attempt to cut your own, or contact one of the dealers on the site and see if they'll send you one out. I have a spare one here if worst comes to worst. Don't know how long it takes to post Aus to South Africa, and it sounds like you're running short time.
If you're not going to have any of the head machined you still have options. Putting in a thinner/smaller stack of gaskets will reduce the squish and raise the compression. This will favour bottom end to mid both with the port timing and with the CR. You just don't want to go so far as to inhibit the top end, or end up with fuel supply issues/pinging. I'd probably take the time to at least take a squish measurement and measure the gasket stack you are using. From there someone can probably at least estimate your CR.
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