2.2K 1/2W for both R113 and R16 is fine. You want even values for a 50% divide. 2.2K will be close enough, but less precise and bonus of using less energy.

you want half watt resistors because at 2K the resistors would be using about 0.22w which is too close to a 1/4w rating. If the resistors do start to burn open they can go in a way that ends up killing u14 with over voltage.

For ease and speed of assembly it works best for me to stuff parts smallest to biggest and them in steps by component type. Stuff all the caps then solder them. Stuff all the resistors then solder them. Then the diodes, etc...

The resistor might not physically fit. Higher power rating is usually larger in size.

power ratings on a resistor is a maximum. They work up to that power rating before they self destruct.

If both resistors are 2000 ohm the resistor divide is 50/50 so there will be about 21v across each 2000 ohm resistor.

(V²) / R = Power (watts)

(21²) / 2000 = 0.2205W

a "quarter watt" resistor =0.25W.

Seems best to overshoot resistors power ratings by at least 50% to avoid it burning over time. It is common to see R16 and R113 burned on the bally MPU. No other 1/4w resistor on the bally MPU needs upgrading.

The 82ohm 2W resistor can be eliminated by using NVRAM and jumpering CR5 and CR7. That sucker burns up too. I would use at least a 3w resistor there. 5w gets a little tight.

Knowing the that 12v unreg supply commonly reads as high as 16v...

(16²) / 82 = 3.12W

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The 555 timer circuit creates a display interrupt pulse around 320-360hz. That pulse tells the CPU to update the displays. You can check that signal with a frequency count feature on a DMM. It is labeled as "DISPLAY INTERRUPT" on the schematics, goes to a PIA port.

Rolling displays is usually a power supply issue. Last time I saw it a lead of the 230v filter cap had broke loose.