I think you´re after how to fix the reflection onto the head cover panels?
Added 14 minutes later:
Wait...... you said something about the .java for the block itself?
If you want to remake the .java for the block, I think you´ll need to borrow some (.java script) lines from an already existing setup for what sounds it should use. An example of such can be found at mindeliszz´s Shift2_sounds mod but it may or may not have what you´re looking after (V10 sounds).