You probably need to identify the kit you have. Do you have any instruction sheets that came with the kit?
The reason I ask is to understand where and what part on the installation you are having trouble with.
For example, I believe (I really don't know) the spring needs to be compressed before the arm can be installed.

Last edited by buoymaker; 07/05/2021 7:20 PM.
"Adding CFM to a truck will only help at engine speeds you don't want to use."
"I found there was nothing to gain beyond 400 CFM."