Welcome to the site !!
That would be my guess , I would also be concerned about the radiator cap , if it is spitting out , that means it is most likely low on coolant , so the issue you have to find first is , what caused the coolant to spit ? , was it the gasket ? , or was it something else that caused it to lose coolant and that is what blew the gasket ? ..... Question , did you overheat ?? ... like was it fine , then one day you overheated it going slow or something and it has been like this since ?? , or do some tight trail riding with it ??? , curious
, as any "new" bike issues concern me ... and how many hours do you have on it ??? ................. I have 62 hours on my 20 and have had no issues , I also switched to Engine Ice and a 2.0 CV4 radiator cap at about 10 hours , and only track ride it , I plan on doing a piston at 100 hours