Was watching YouTube a guy with a Atc500r put a decompression switch on the top left side of cylinder head not in the cylinder itself. At least if sum thing goes wrong all u have to replace is the head an not complete cylinder. An by the looks of it the thing looked as easy or easier to start than a 250r with terrible compression. Just an observation.
If you can't kickstart it. You need a four stroke!
Need help starting a zilla.
1) go to a gym and work out your legs.
2) learn how to jet/tune the carb correctly
if you still can't start it, time to sell.
I had a decompression in my zilla used a cool head with a dome that a second hole drilled in with a saw decompression in it.
why not use a chainsaw decompression switch ?