how to upgrade a curtis 1204-410 internals to get higher amps

[jamisonc]

hey there,

i have a 97 cc ds 48v with a stock 225a Curtis controller. i already have the controller apart from previous repair and wanted to see if i could go ahead and upgrade the internals to gain some amperage. i found this website http://www.ferromit.com/controller.html and it showed me how to open the controller and take it apart. he also used 75V 60A mosfet transistors. is there a better transistor that i should use? also, should i leave the ones thst are there or replace those as well. thanks for all your help.

[Cony]

What are the P/N of the transistors presently on the Motherboard? I can do a cross reference and see if there are any better ones!

[jdunmyer]

Interesting link you posted, thanks!

[jamisonc]

here is a pic of the transistor. it has 2 numbers on it.
RFP40N10
H514

i think i read somewhere that i can also fill the empty spots as well, is that correct? thank you.