1 correction in Gradius ROM:
raw rom offset $0cd9 change $3d to $7d

I don't know if there's more, I didn't find any. The game boots but the score digits don't display properly, could you check those segments object title 'coordinates'? The rest of the game works fine.
temp artwork is here: http://tsk-tsk.net/net/temp/kgradius.zip