Hi all - I'm working on getting a busted-up eBay (sur)prize back on track but don't have any original paperwork - how to get the upper shell off? I've removed all the screws I can find (1 under lead truck, 1 in the mid bottom, 1 in front of stack), both ends of the upper shell will pull up from the lower but sumpin' in the middle has me bumfuzzled. I searched & found several threads on fixes/repairs/upgrades so some of you are familiar w/this model, but no notes on disassembly. Anyone willing to post or scan & email a copy of the instructions? Any help greatly appreciated! Thanks.