07 EC300 - steahly flywheel weight installation

[g dirt]

I just received a 11oz. Steahly flywheel weight for my 07 EC300.
Before I start with the installation, does anybody know what it means "needs spacer", written on the package?
I thought this would be a quick and easy install...

[05MC250]

They are talking about the ignition cover clearance over the weight

[GMP]

I have both 10 and 14 oz weights that GoFasters sells and neither require a spacer. An 11oz spin on should not be that thick, check fit first.

[g dirt]

thanks for the help guys, the flywheel weight went on without a hitch; the only way i could get the engine to stop from turning over was by inserting a piece of rope thru the spark plug hole, as per the instructions.
took the GG for a spin, and really like the outcome.