Vintage Synth Repair

Greetings to all, my first post.  I have a Roland Jupiter-6 that has 
been stored in an Anvil case undisturbed for at least the last 8 
years.  There is an oscillator tracking problem with it and repairs 
have been on the back burner.  Finally settled down enough to fix and 
today I opened the case only to discover that the case foam has 
completely collapsed.  I carefully removed the unit from the case and 
vacuumed as much of the crumbled foam as possible.  Does anyone know 
what the best process to clean the unit (outside first and then 
inside).  Would like to redeem myself and save if from the spare-parts 
graveyard.  Thanks!