I stripped my LG100 down today. It had oil and grease all over the place!?
I had previously applied a little light gun oil to the cocking lever, but not as much as I found inside!
The original reason for applying the oil was due to the cocking action being stiff, this turned out to be because the 2 action allignment bolts were loose.
Thankyou to Chrispro97 for your help. I have cleaned it all up and put it all back together without the bucket of grease.
It is now running better than ever.