So I just purchased an 06 gsxr 750 with a k7 (2007 gsxr 750 motor with 11k miles) the reservoir was full when I stopped for gas the temp was about 222 degrees the fan was running I cut the bike off about 30 secs to a min coolant comes rushing out of the overflow line. I rode home and watched the temp it never went over 230 degrees. I flushed the coolant out ran the hose water through it till it was clear, filled the radiator with engine ice filled burped it then filled the reservoir back up and again I’m riding come to a stop the temp goes up and all the coolant from the reservoir comes out the overflow tube. The radiator isn’t in the best condition either. Everything seems tight hoses clamps but I keep having this issue with the overflow and reservoir not holding coolant. Any input or advice would be helpful thanks