o.k.

So you have made the loop stretch to 1bar. I personally have never had a loop run over like that... SO... this means you are missing something.. TBH i cant think what. the scenario doesnt sound likely to me.

Perhaps you could also tell us what the version is you are using. It might help.

By shortening the OUt do you mean shorteing the 'CUT BY' setting in each samples channel?

;)