I never removed mine and havn't had any troubles in 10 years on a hemi that has no problem @ 7200 rpm.

Seems to be hit or miss on if the spring is a problem or not. They have a note in the instruction's that says if it happens to remove spring not that it's a must remove.

If you need to remove the spring expand the spring with the pedal and either put washers,pennies,or even wood shims in the stretched out space and move the pedal and it will come right off.