I am getting many broken warp threads on the bamboo warp threads provided in this kit. Any suggestions /advice?

Where are the broken threads in the warp - selvedges, middle?

In various areas but mostly In the middle. I have started brushing on sizing and it seems to be helping.

Could you send a photo of what's happening to me at [email protected]. This is one of those times that a photo will help us see what's happening.