Region Flex problems Logic Express 9

Hello

I have a really annoying problem using Flex Time in Logic Express 9.

Whenever I try to extend a region the length automatically jumps by an entire bar longer. I have switched Snap to Ticks so it's not that (once it has leapt a whole bar it resizes fine).

It is infuriating! I only want to stretch the audio a couple of ticks as I am trying to match an acapella to a beat.

Please help before I throw my laptop out of a window!!