Hey, I just recently had a short throw shifter installed on my car (2000
civic SiR/Si in US). Works great except when in 2nd or 3rd and the car is
slowing it self down/engine reving the shifter vibrates and makes a rattling
noise. By placing my hand on it it goes away.

Is this because there is something loose that wasn't put back on right?
any suggestions would be great.