Superjet Refoam Part 1: Defoam

Here's how I removed the waterlogged foam from beneath the tray of my 1992 Yamaha Superjet (square nose). Stay tuned for Part 2 - refilling the cavity with a combination of high density, closed-cell pink foam board and 2-part expanding foam. Materials - Owens Corning Foamular 250 (Menard's) - Fiberglass Supply Depot 4lb density 2-part closed-cell expanding foam (=ppx_od_dt_b_asin_title_s00?ie=UTF8&psc=1) - Drain plugs: Titan Performance Parts DP-158 (