Ryan,
Here is what I have found but I’m open to other info from the experts.
I purchased a new X30 in late February 2015 which came thru KartSport NA the US importer. It did not come with the vibration plate and it uses the newer Tillotson carb. When I checked I was told the plate is not used anymore.
I’m using a Odenthal PRMax 10 deg mount. I also had the same bolt problem and went with bolts 5 mm shorter. There is a minimum thread engagement spec in the instructions and even with the shorter bolts this is exceeded.
If there is any other info I’d like to know, I have not fired this engine combo yet.
Regards,
Dave