so... i have no idea what a porter is, and yes, i am a mega ultra nerd.... anywho, since beer contains a great deal of "contaminents" (read. things that aren't distilled water), those can cause a circuit to "jump" to and from places that they shouldn't (electrolytes sound electric-ee because they are). I would disassemble your mod as much as possible, get out the rubbing alcohol, and get the softest bristled scrubbing brush you can get (a cheap toothbrush would do fine), dip the brush in the rubbing alcohol, and scrub all the beer residue away, rinse, repeat, and finally rinse with distilled water, then blow out as much water as you can with compressed air as quickly as possible, then let it sit and dry for far longer than you think might be necessary. it just might be salvageable.
if the circuit already jumped and something is fried, get ahold of the people who made it, and find out if they have spare parts lying around, chances are you'll just need to solder in a new wire or circuit board and it could be up and running with relative ease. if nothing works, pm me, i might be able to fix it.
Jon