I have Gradius Portable on my PSP and i'm trying to beat Gradius III, i've mastered almost all the stages but when i reached the stage 8 boss (Choking Weed) that shit sucked me in almost 5 seconds, i play Gradius III on the difficulty 3 because i've played the original Arcade version on the MAME and they are identical (example: the number of sand dragons that appear on stage 1), even if i beat him with the five speed ups, it's doesn't care because i know i'll be killed later (i use the Type B and that don't have the Speed Down, and i don't like the Edit Mode because the missiles are useless on the Moai and Cell Stage), i don't know why this happen because i've watched other players like Seahawk or the guy of World of Longplays (i think it's called Schlauchi) beat him with 2-3 Speed Ups without problems.
PD: Sorry if my english is bad, i'm spanish.