Hi Stuart, 3 in 1 is a bit on the thick side mate, it will attract all sorts of dirt. Best to flush it out with some WD40. Then use WD40 or similar now n then. Also try to keep the Key clean.So dropped some 3 in 1 in to each keyhole... looks to have done the job..
stuarts phone
The springs inside these locks are very small, it doesn't take a lot to stop them from returning the discs into place and stop the key from turning once into position.
Hope this helps.
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