Is it possible to create a seamless 2 or 4 bar loop for use with Boss RC 300?

I have tried this but I cannot get anything to loop seamlessly, there is always a glitch at the end of the loop.
It loops fine within band in a box when I set it to more than one chorus of course.

I can't believe that this very complicated (and expensive) isn't capable of doing this, I must be doing something wrong.

Please HELP!! (I remember the days where it was possible to get online help)

Edited by parkgate (10/27/19 03:33 PM)