I found this pretty cool script on youtube by this guy

and on one bit of the description it had some very useful script and he says "Press kp_plus" what is kp plus?. Also I don't even know if I entered the script right if you enter it through the console I did it right but yeah what does kp_plus mean derp.

//Shallow's SJ Script

alias sj2_enabled "bind SHIFT +m1fix"
alias sj2_disabled "bind SHIFT +voicerecord"

alias +m1fix "bind mouse1 +m1crouchjump; +duck"
alias -m1fix "bind mouse1 +attack; -duck"

alias "+m1crouchjump" "+attack2; +jump"
alias "-m1crouchjump" "-attack2; -jump; slot3; m1sec"

alias "m1sec" "bind mouse1 +m1sfire"

alias "+m1sfire" "+attack2"
alias "-m1sfire" "-attack2; -duck; m1normal"

alias "m1normal" "bind mouse1 +attack"

bind "KP_PLUS" "sj2_enabled; voicemenu 1 0"
bind "KP_MINUS" "sj2_disabled; voicemenu 0 7; bind mouse1 +attack"

Basically, press kp_plus to toggle it on, take out your wrangler and duck using SHIFT by your sentry, check the angle and hit M1 two times. Press kp_minus to toggle it off, and kp_plus again if you fail your jump. Toggling the script off rebinds Shift to it's default bind, +voicerecord.
 
Can you copy and paste the script here?
This is the one provided on the YouTube video:
Code:
alias sj2_enabled "bind SHIFT +m1fix"
alias sj2_disabled "bind SHIFT +voicerecord"

alias +m1fix "bind mouse1 +m1crouchjump; +duck"
alias -m1fix "bind mouse1 +attack; -duck"

alias "+m1crouchjump" "+attack2; +jump"
alias "-m1crouchjump" "-attack2; -jump; slot3; m1sec"

alias "m1sec" "bind mouse1 +m1sfire"

alias "+m1sfire" "+attack2"
alias "-m1sfire" "-attack2; -duck; m1normal"

alias "m1normal" "bind mouse1 +attack"

bind "KP_PLUS" "sj2_enabled; voicemenu 1 0"
bind "KP_MINUS" "sj2_disabled; voicemenu 0 7; bind mouse1 +attack"