Transpose not working properly

[Eloitor]

^t command doesn't work. In order to make it work I changed the following in the file commands.ahk:

;; transpose ARG chars
transpose_chars()
{
    command_abc("{left}{shift down}{left}{shift up}^x", "{right}", "^v", 1)
    kill_ring_restore()
}

Additionally, sometimes it deletes a letter. Adding some delay helps.