The LW slides hit like a dream! Honestly hits like there isnt anything there at all! Both the 14 and 18 are awesome but ive found i like the 14 a little better! I was just told this weekend by a friend that the best way is to get dental floss and thread it in between the cracks... takes a little longer but after seeing how clean his slides got its defiantly worth it! The pipe cleaners also work as well but thought id let ya guys know! Hope this helps!
VB