G'Day DJV,
My mount has a bubble level built in which gets me close enough to drift align. I know a lot of others don't like the bubble level and use precision levels on the top of their tripods before attaching their mount.
I'm not familiar with your mount, but I'm guessing from your question that you don't remove your mount from the tripod when you pack up?
I imagine that if you take your mount off the tripod there will be a suitable flat surface you can use a level on.
Al.