Always i use on my projects with I2C , 1OK resistor without problem.
Now i am afraid for the NS73M , because work at 3,3 volt.
I have make the PCB and tomorrow maybe i will test.
Maybe i Set pull-up to 3.3v to test , or i run all at 3,3 volt (and LCD).
Have any problem with 16f628a with 3,3 volt;