Need help injecting my Zip Fits Have gunn and cork

I have a pair of leather Zipfits that I need injected agian.
Been looking all over the Front range for a dealer with no luck.
Found a gun and cork stuff at Sport Stalkers in Steamboat. They offered up the gun and cork stuff but no one there knows how to use.
Any insight in how much to inject in the inside ankle pockets would be very helpful.
I am pretty sure it is the so called one min fit liner. The one you toss in the micro then clamp down.
Thanks