Cutting data lines

[Griffin]

I was reading a post about a Yamaha PSS-270, which gave a link to a bend lesson about this machine. It involves cutting the data lines going from the FM synth chip to the main chip.

How in the hell do you do that? Here's the link so you can take a look at it and help me

[nochtanseenspecht]

with a knife 

if you are not certain, give another cut next to the first.
but be carefull : don't cut more lines than you have to, so choose a position
where is enough space to cut.

you're about to have a great time with that 270 !