Thanks for watching. Glad that videos benefit fellow enthusiasts.
On a scale of 1 to 10, the mcwill mod has a difficulty of 10/10 if the recap surgery is rated 6/10. The hardest part is removing the SMD resistors, FETs and capacitors, without ruining the PCB copper trace because they are so tiny. Daylight is highly recommended to aid visibility. Among the 10 to 15 tasks that could fail the mcwill mod, there is a particularly-daunting step which requires removing an SMD resistor and re-using that to replace another tiny component. If the copper trace under that component to be replaced, got curled up due to excessive heat from desoldering it, the entire “surgery” would fail irreversibly.
However, if you take your time and do it carefully(take short breaks after each step), it is definitely do-able. Also, if you have a 7$-40watts soldering iron like mine, keep the mains switch closeby … you will need to turn off the power supply every 4 to 5mins just before the tip gets too hot.
The light gun mod on the other hand is a "walk in the park " as compared to the mcwill which is “getting up to Mt Everest’s peak”.