So...
I modded my LFS and the gamefiles are some of them are f--ked up.
I want to reinstall the game without activating as the activations are limited. Any suggestions?

Doesn't a regular system recovery work in this case?

1) you can just copy the contents of the /data/misc folder from the unlocked copy to activate the new install
2) you could just unzip over all your messed up files which should clear the mess while keeping lfs unlocked and all your settings setups etc intact

Maybe you are mis-understood.

You get more activations every friday, upto a maximum of 2.

so no need to spare the activations?

Nope, unless you decide to like reinstall like 65465 times a week.

ok thanks