The "sound" or feeling when editing clips is gone (if this makes sense)

Hey guys,

If anyone culd help me here that would be a massive help, becasue this is driving me insane. This is really hard to explain, but im in premiere pro editing video clips and you know when your editing you can adjust clips, as in make them bigger or smaller, and cut clips and move them to the next clip prefectly conneted and it almost makes a sound/feeling so you know its lined up. Im trying to discribe this the best I can, but that "effect" i guess you could call it, just disapeared and now im trying to edit and lining up clips is so annoying but its not exact and im not getting that prefect connection between clips, etc. If this made any sense and you can help me, you would be an absoutle life saver!!!!!