Hey Guys i have a British L1A1 that i got from my brother that was sitting in his gun cabinet untouched for about 8 or 9 years. i cannot get the take down lever to move. i can get the lever to wiggle just a little but it will not move. i even took a small piece of wood and was tapping it with a small hammer and didn't get any where. any one have any advice they can offer.