Makerbot #453 : RepG 18 And Temperature.

I was trying the Rep G v18 and wanted to make some adjustment. I changed the thermistor table values to make some test but I didn't took note of originals values ( This is what append when you work in the night).
Now I have strange behavior : When I set the Temp to 200C, the reported temperature stop at 190C (always 5 to 10C under what it is set). That make impossible to print since the script wait for the correct setting.  The only way t o make it working is to set the temp. to 10C more than required. This give me enough time to start the print before temp go down under required setting.
I will try to find originals values and will do more tests.