Just got my previously running NC50 back out of the garage and - after winding the spring, which works - I found that pulling the brake cable wouldn't release the spring lever. At first, I tried adjusting the cable, but in the end I realized that there was too much play in the lever. Where it would normally hold, it winds as if there is no restricting force inside. To find that out, I compared to my other express. Wondering what the likely issue is inside the case that is preventing the spring from being released. Also, I don't really want to remove the cover with the spring wound, but don't see any other way. Could you all please advise? Thanks.