The other day i found an old yamaha pss-130 keyboard in my shed and would like to mod it
but lack the necessary tools

This what i would like added to on my keyboard:
-input jack (compattible with guitar amps and digitech RP80 FX pedal)
-remove the automatic rythm on the recording function

can anyone help me?? or suggest a place where i can get it done presumably at a reasonable price

my location is Perth Western Australia
I never heard of any Keyboard modders(term, like luthiers, but for keyboards)

If you wanted to use your pedals, wouldn't you need input and output? But I bet your keyboard has an out already.
..I was watching my death.